Over the years, I have grown really attached to my home theater system. I must say, of all the rooms in the house, my own little movie theater is the one I could not live without. I am absolutely in love with my home theater system and, if you are anything like me, I am sure you will love yours too. I found, when I was initially building my system, that there was so much information to absorb. Every product out there seemed better than the next, and I found myself unsure about which to buy. Here are a few things to keep in mind when shopping for a new home theater projector.
There are two main types of projectors on the market; DLP and LCD. DLP stands for digital light processing. It was invented by Texas Instruments, and utilizes a microscopic array of over 2 million mirrors. DLP has a higher contrast than LCD, but there are some unfavorable consumer reports that note something called the "rainbow effect". The "rainbow effect" is noticeable when looking from one side of the screen to the other, and is characterized by a sudden burst of color.
LCD stands for liquid crystal display. These projectors have three distinct glass LCD panels inside; one for each component of the video signal (red, green, and blue). While DLP chips reflect light, the LCD panels allow light to pass through them. LCD projectors produce brighter images, and they are known for having excellent color saturation. In the end, you will be hard-pressed to notice a great difference between the two types of projection systems.
When shopping for a new projector, keep your particular needs in the forefront of your thoughts. As I mentioned above, it is really easy to lose yourself in the minutiae of each particular system. Connectivity is a definitely something to be mindful of. Make sure that you are able to connect all of your components, including your gaming system. Nothing beats playing Halo in real-life size! Contract ratio is another important factor; the higher the ratio, the better the picture will be.
The brightness of your projector is another thing to consider. Light output is measured in ANSI (American National Standards Institute) lumens. You will want to avoid a projector that produces anything shy of 1000 lumens. As you are likely aware, the projection resolution is extremely important. This refers to the number of pixels that can be displayed on the screen. Go for something that is no less than 1024x768, as this will allow you to fully appreciate the depth and quality of HDTV. In the end, you should buy the projector that is in line with your needs and your budget. Soprano's is coming on right now! Time to go!
http://www.articlejoe.com/Article/Home-Theater-Projectors-for-the-Cinephile-in-You-/22966
Saturday, October 13, 2007
What is Surround Sound and Why Do You Want It?
Whether you are an audio novice or an experienced technophile, this article is for you. Let’s take a few minutes to review the basics of surround sound, and the principles behind it. If you are new to surround sound, this will help you to understand the concept. It will also refresh the memory of those already in the know. These are the basics of sound.
Monophonic sound is single channel and unidirectional. Basically, this means that your audio is all filtered down into a flat single channel. All elements of the recording are mixed down into one source, thereby seeming to originate from the same source no matter where you are standing in the room. This is old school, kids.
Stereophonic sound is reproduced through two channels and is considered superior to monophonic sound. You can tell stereophonic sound, because different sounds originate from either speaker. This type of sound gives one the sense of being there during the recording. The best example of this is listening to a recording of the symphony, where different band members are located in different parts of the room. The strings are over here, and the horns are over there.
Surround sound was first pioneered by Dolby in the early 1970’s, and first used in movies such as “Tommy” and “Close Encounters of the Third Kind”. The Dolby process encapsulates four channels of audio; left, right, rear, and phantom center. The reason it is called phantom center is because it is essentially a mix of the left and right front channels. This gives the listener the impression of being surrounded by sound, hence the name surround sound.
Dolby surround sound has evolved considerably in recent years. Dolby 5.1 is bar far the most common. Dolby 5.1 is similar to traditional surround sound, but it is further broken down and processed into more distinct channels. Dolby 5.1 increases the range of sound by adding stereo rear sound as well as a dedicated subwoofer channel. This results in a far superior surround sound experience. You not only hear surround sound, but you feel it, too!
Technology is ever changing, and the marketplace offers many surround sound options. This article is not complete by any means, and only serves as a primer on the basics. Check out your local electronics superstore for the latest technology.
http://www.articlejoe.com/Article/What-is-Surround-Sound-and-Why-Do-You-Want-It-/22965
Monophonic sound is single channel and unidirectional. Basically, this means that your audio is all filtered down into a flat single channel. All elements of the recording are mixed down into one source, thereby seeming to originate from the same source no matter where you are standing in the room. This is old school, kids.
Stereophonic sound is reproduced through two channels and is considered superior to monophonic sound. You can tell stereophonic sound, because different sounds originate from either speaker. This type of sound gives one the sense of being there during the recording. The best example of this is listening to a recording of the symphony, where different band members are located in different parts of the room. The strings are over here, and the horns are over there.
Surround sound was first pioneered by Dolby in the early 1970’s, and first used in movies such as “Tommy” and “Close Encounters of the Third Kind”. The Dolby process encapsulates four channels of audio; left, right, rear, and phantom center. The reason it is called phantom center is because it is essentially a mix of the left and right front channels. This gives the listener the impression of being surrounded by sound, hence the name surround sound.
Dolby surround sound has evolved considerably in recent years. Dolby 5.1 is bar far the most common. Dolby 5.1 is similar to traditional surround sound, but it is further broken down and processed into more distinct channels. Dolby 5.1 increases the range of sound by adding stereo rear sound as well as a dedicated subwoofer channel. This results in a far superior surround sound experience. You not only hear surround sound, but you feel it, too!
Technology is ever changing, and the marketplace offers many surround sound options. This article is not complete by any means, and only serves as a primer on the basics. Check out your local electronics superstore for the latest technology.
http://www.articlejoe.com/Article/What-is-Surround-Sound-and-Why-Do-You-Want-It-/22965
Impress your Friends with your new Home Theater System
So you’re in the market for a new home theater system? Why not? Everyone you know either has one or wants one. Are you sick of having to go to your buddy’s place to watch the game on the big screen? Have you been playing that SNES system, circa 1995, since, well, 1995? Is your prized movie collection in laserdisc format? Maybe it is time to invest in a new home theater.
The first thing you ought to do is establish a budget. You could spend thousands of dollars on your new system, so give some consideration to what you are able to spend. There’s no point spending your rent money on a TV, if you will not have an apartment to watch it in.
Once you have decided what you are able to spend, draft a wish list of components you would like. Big screen TV or LCD projector? X-Box or Playstation? What about surround sound? 5:1? 6:1? 7:1? There are so many options, and the possibilities are seemingly endless. Keep it simple. Do you really need a 51 inch HDTV, for your 10x10 living room?
Either way, your system will definitely need certain components to qualify as a home theater. For the sake of being modest, why not consider getting started with a home-theater-in-a-box? These packages generally come with a surround sound receiver, a set of speakers, and a DVD/CD player. These systems are relatively inexpensive, and will leave you with enough cash flow to buy that new Sopranos box set! Capice?
A lot of people like to include gaming systems in their home theater, especially if they are able to play on a big screen. There’s nothing like playing Halo in life size! If you do most of your gaming on your computer, most decent video cards will have a video line out that you can use to connect to your TV or projector. Otherwise, you can incorporate any other console system into your home theater.
Your sound system will likely consist of a number of speakers (left, right, and center front, surround left and right, and a subwoofer). This is the standard surround system. The wattage of the amplifier you are using will greatly affect the sound being produced, so be sure to use one with enough power to effectively supply your system.
As I said, the options are seemingly endless for home theater systems. Be sure to buy from a reputable dealer, and do not buy anything that does not have a 30-day money back guarantee……just in case you have to return it to pay your rent!
http://www.articlejoe.com/Article/Impress-your-Friends-with-your-new-Home-Theater-System/22964
The first thing you ought to do is establish a budget. You could spend thousands of dollars on your new system, so give some consideration to what you are able to spend. There’s no point spending your rent money on a TV, if you will not have an apartment to watch it in.
Once you have decided what you are able to spend, draft a wish list of components you would like. Big screen TV or LCD projector? X-Box or Playstation? What about surround sound? 5:1? 6:1? 7:1? There are so many options, and the possibilities are seemingly endless. Keep it simple. Do you really need a 51 inch HDTV, for your 10x10 living room?
Either way, your system will definitely need certain components to qualify as a home theater. For the sake of being modest, why not consider getting started with a home-theater-in-a-box? These packages generally come with a surround sound receiver, a set of speakers, and a DVD/CD player. These systems are relatively inexpensive, and will leave you with enough cash flow to buy that new Sopranos box set! Capice?
A lot of people like to include gaming systems in their home theater, especially if they are able to play on a big screen. There’s nothing like playing Halo in life size! If you do most of your gaming on your computer, most decent video cards will have a video line out that you can use to connect to your TV or projector. Otherwise, you can incorporate any other console system into your home theater.
Your sound system will likely consist of a number of speakers (left, right, and center front, surround left and right, and a subwoofer). This is the standard surround system. The wattage of the amplifier you are using will greatly affect the sound being produced, so be sure to use one with enough power to effectively supply your system.
As I said, the options are seemingly endless for home theater systems. Be sure to buy from a reputable dealer, and do not buy anything that does not have a 30-day money back guarantee……just in case you have to return it to pay your rent!
http://www.articlejoe.com/Article/Impress-your-Friends-with-your-new-Home-Theater-System/22964
Digital Cameras and Photography Shopping Tips for Electronics Consumers
The majority of digital camera focused tips you will view on the internet are focused on assisting people to research specific digital camera items such as Tamron AF55 200mm F 4 5 6 Di II LD Macro lens and LEICA CAMERA Starter Accessory Kits, locating this type of digital camera guidance may sometimes be very arduous indeed.
For people getting merchandise such as Fujifilm Finepix V10 5MP Digital Cameras or Olympus C770 Digital Cameras, it is best advised to speak to a variety of photography specialists before you embark on your search, you might very well be shopping for a special product like a Nikon TC E3ED 3X Teleconverter Lens or a Tiffen 72mm Lens Kit includes Digital Ultra Clear Filter but because of a lack of details take the wrong Sigma APO 70 200mm f 2 8 EX DG Macro HSM Lens.
Before you contemplate any digital camera purchase be sure that the digital photography merchant you might be buying your product from gives you the opinion that getting a refund and merchandise returns will not turn out to be a hassle, switching or part exchanging a Nikon WC E75 Wide Converter Lens for a Tamron AF55 200mm F 4 5 6 Di II LD Macro Lens must never turn into a real issue.
A whole host of digital camera related searches could possibly have led you to a digital camera or photography associated portal, searches such as "find Canon S230 digital Cameras" or "guides on Canon SD700s", the real trick with any digital photography portal is to go immediately to the site menu, if you do this you should not be side tracked due to digital camera guides that are not connected to the photography item you need.
The digital camera experts will be able to give you some reliable niche advice on issues such as obtaining the most competitive prices on HP Photosmart M517 5MP Digital Cameras and how to get the proper merchandise guarantee when ordering a digital camera, such quality digital camera guidance will surely ensure you get the right product for your requirements.
The way to find out if a digital camera website may be able to help you with your particular digital camera search, pretend for a moment a Coolpix 3700 digital camera is your particular product, is to discover if the site contains a categorised digital camera section and a good number of digital camera write ups, if in fact it does supply this type of things then getting a digital camera that is suitable will be easy, if however the site is about a common photography topic then it is unlikely you will come up with your required digital camera targeted help.
It has to be said that the town book shop can often be an obvious place to obtain guidance about digital camera items, advances such as the internet can make us neglect the many different photography resources that are currently freely available to us, you should certainly make use of these kinds of havens of great digital camera data, suitable digital camera product info may very often be hard to find.
The digital camera experts will be able to offer you some prime niche info on issues such as obtaining the lowest price on HP Photosmart M22 4MP Digital Cameras and how to get the right merchandise guarantee while buying a digital camera, such digital camera assistance will surely make sure you order the best products for your needs.
The easiest way to tell if a digital camera site may perhaps be able to help you with your particular digital camera search, say for example a Casio Exilim EXZ55 5MP Digital Camera is your specific item, is to try and see if the website contains a categorized digital camera directory and an amount of digital camera reviews, if indeed it does incorporate these types of things finding the digital camera you want will be easy, if however the particular site is targeted at a general digital photography subject then the chances are you won't pinpoint your necessary digital camera targeted help.
If a person is purchasing merchandise like a Kodak Performance Series Digital Camera it might not always mean purchasing from a digital camera or photography focused site, lets imagine you are living in Arizona for example, a digital camera directory may be able to give you relevant details of closely situated digital camera stores who should with any luck be able to help you to find the digital camera you require.
http://www.articlejoe.com/Article/Digital-Cameras-and-Photography-Shopping-Tips-for-Electronics-Consumers/21617
For people getting merchandise such as Fujifilm Finepix V10 5MP Digital Cameras or Olympus C770 Digital Cameras, it is best advised to speak to a variety of photography specialists before you embark on your search, you might very well be shopping for a special product like a Nikon TC E3ED 3X Teleconverter Lens or a Tiffen 72mm Lens Kit includes Digital Ultra Clear Filter but because of a lack of details take the wrong Sigma APO 70 200mm f 2 8 EX DG Macro HSM Lens.
Before you contemplate any digital camera purchase be sure that the digital photography merchant you might be buying your product from gives you the opinion that getting a refund and merchandise returns will not turn out to be a hassle, switching or part exchanging a Nikon WC E75 Wide Converter Lens for a Tamron AF55 200mm F 4 5 6 Di II LD Macro Lens must never turn into a real issue.
A whole host of digital camera related searches could possibly have led you to a digital camera or photography associated portal, searches such as "find Canon S230 digital Cameras" or "guides on Canon SD700s", the real trick with any digital photography portal is to go immediately to the site menu, if you do this you should not be side tracked due to digital camera guides that are not connected to the photography item you need.
The digital camera experts will be able to give you some reliable niche advice on issues such as obtaining the most competitive prices on HP Photosmart M517 5MP Digital Cameras and how to get the proper merchandise guarantee when ordering a digital camera, such quality digital camera guidance will surely ensure you get the right product for your requirements.
The way to find out if a digital camera website may be able to help you with your particular digital camera search, pretend for a moment a Coolpix 3700 digital camera is your particular product, is to discover if the site contains a categorised digital camera section and a good number of digital camera write ups, if in fact it does supply this type of things then getting a digital camera that is suitable will be easy, if however the site is about a common photography topic then it is unlikely you will come up with your required digital camera targeted help.
It has to be said that the town book shop can often be an obvious place to obtain guidance about digital camera items, advances such as the internet can make us neglect the many different photography resources that are currently freely available to us, you should certainly make use of these kinds of havens of great digital camera data, suitable digital camera product info may very often be hard to find.
The digital camera experts will be able to offer you some prime niche info on issues such as obtaining the lowest price on HP Photosmart M22 4MP Digital Cameras and how to get the right merchandise guarantee while buying a digital camera, such digital camera assistance will surely make sure you order the best products for your needs.
The easiest way to tell if a digital camera site may perhaps be able to help you with your particular digital camera search, say for example a Casio Exilim EXZ55 5MP Digital Camera is your specific item, is to try and see if the website contains a categorized digital camera directory and an amount of digital camera reviews, if indeed it does incorporate these types of things finding the digital camera you want will be easy, if however the particular site is targeted at a general digital photography subject then the chances are you won't pinpoint your necessary digital camera targeted help.
If a person is purchasing merchandise like a Kodak Performance Series Digital Camera it might not always mean purchasing from a digital camera or photography focused site, lets imagine you are living in Arizona for example, a digital camera directory may be able to give you relevant details of closely situated digital camera stores who should with any luck be able to help you to find the digital camera you require.
http://www.articlejoe.com/Article/Digital-Cameras-and-Photography-Shopping-Tips-for-Electronics-Consumers/21617
Women Are Major Electronics Consumers
Women are taking a greater interest in, and have a more sophisticated understanding of electronics than ever before.
Women actually spent more on technology last year than men, according to the Consumer Electronics Association. It says women accounted for $55 billion of the $96 billion spent on electronics gear (statistic from a January 6 CEA press release).
Women are increasingly interested in gadgets, from DVD players to digital cameras, for themselves or birthday gifts for their families.
Almost a third of women consider themselves early adopters willing to buy cutting-edge consumer technology.
CEA reported that women in the United States are becoming more likely to use consumer electronics. CEA's study provides detailed information about the attitudes, purchase considerations, decision influences, purchase channels, current product ownership, and future purchase intent. Here are some of the findings:
• Women are involved in 89 percent of all consumer electronics purchase decisions.
• 84% of women believe that new technologies can improve their lives.
• 48% of women age 18–34 own a digital camera.
The CEA survey noted that women have very positive reactions to specific technology areas, like HDTV, cell phones, and digital photography.
Women have more buying power and they increasingly use technology to manage their busy schedules. Women's comfort level with technology is at an all-time high.
Women want products that make it easy to connect and make it easy to operate; limited wiring or no wires at all; slim, well-designed products; making electronics available in different colors is not very important; low on setup and high on usability. Usability often is an important factor to women when they buy technology;
At CES, organizers hung big pink banners saying "Technology is a Girl's Best Friend," even though the group's own research found a third of women surveyed don't like products with girlie colors.
Nearly three-quarters of women surveyed complained about being ignored or patronized by sales people when shopping for electronics.
A growing number of companies are starting to target their wares toward female buyers.
Sony is outfitting its electronics with features that many women seek and is designing Sony Style retail stores to appeal to women’s preferences by creating an environment where women feel comfortable. Many of Sony’s efforts are focused on functionality. Women are becoming informed and involved in technology areas where they once had little or no presence.
About Author
For unique, unusual gifts visit the The Dog House
Women actually spent more on technology last year than men, according to the Consumer Electronics Association. It says women accounted for $55 billion of the $96 billion spent on electronics gear (statistic from a January 6 CEA press release).
Women are increasingly interested in gadgets, from DVD players to digital cameras, for themselves or birthday gifts for their families.
Almost a third of women consider themselves early adopters willing to buy cutting-edge consumer technology.
CEA reported that women in the United States are becoming more likely to use consumer electronics. CEA's study provides detailed information about the attitudes, purchase considerations, decision influences, purchase channels, current product ownership, and future purchase intent. Here are some of the findings:
• Women are involved in 89 percent of all consumer electronics purchase decisions.
• 84% of women believe that new technologies can improve their lives.
• 48% of women age 18–34 own a digital camera.
The CEA survey noted that women have very positive reactions to specific technology areas, like HDTV, cell phones, and digital photography.
Women have more buying power and they increasingly use technology to manage their busy schedules. Women's comfort level with technology is at an all-time high.
Women want products that make it easy to connect and make it easy to operate; limited wiring or no wires at all; slim, well-designed products; making electronics available in different colors is not very important; low on setup and high on usability. Usability often is an important factor to women when they buy technology;
At CES, organizers hung big pink banners saying "Technology is a Girl's Best Friend," even though the group's own research found a third of women surveyed don't like products with girlie colors.
Nearly three-quarters of women surveyed complained about being ignored or patronized by sales people when shopping for electronics.
A growing number of companies are starting to target their wares toward female buyers.
Sony is outfitting its electronics with features that many women seek and is designing Sony Style retail stores to appeal to women’s preferences by creating an environment where women feel comfortable. Many of Sony’s efforts are focused on functionality. Women are becoming informed and involved in technology areas where they once had little or no presence.
About Author
For unique, unusual gifts visit the The Dog House
Home Theatre - What Difference Do Cables Make?
If you go to your local home theater store, you may be confronted by a variety of “extreme” sounding names for cabling: Mega Cables, Monster Cables, Uber Cables… the proliferation of “boutique” cabling is always a source of controversy in home theater and audiophile circles. The question is, how much difference do they make, and are they worth it? Well despite the perils involved in even mentioning this topic, I’m going to attempt to add something to the discussion.
The most important thing to recognize is that a cable cannot improve the sound of a home stereo system any more than an electrical wire can create extra electricity when you plug it into the wall. That’s actually a very good example, because when you’re listening to audio for instance, what we’re hearing is an electronic representation of acoustic sounds – that is to say, the actual sounds have not been captured and stuffed into a compact disc like fireflies in a child’s jar – they have been copied, imitated, and a representation stored on the disc as a series of numbers.
These numbers are then read and translated into electronic signals, which are sent to the speakers in order to approximate the actual sounds. With that in mind, it makes sense that poor quality wires don’t physically change the sound – instead it’s like a game of ‘telephone’, in which the band tells the CD, the CD tells the player, the player tells the wires, and the wires tell the speakers, with something being lost at every step so that the message “Aunt Betty baked a pie” is altered to “Fat Eddy wants to cry” or what should be a great live recording sounds tinny, distant, or otherwise just plain wrong.
A good cable will change the signal as little as possible, but all cables do damage your signal a bit – it’s simply a matter of degree. As far as which cables are the best? That’s up to you or your local audio guru to decide – much is up to personal preference, with the rest probably being left up to your budget to decide.
About Author:
Warren Thompson is fanatic about his new home theater system. He is also a contributing writer for hometheaterfocus.com – an immensely informative guide to home theater technology, with information about speaker positioning, home theater lighting, projection systems and more.
The most important thing to recognize is that a cable cannot improve the sound of a home stereo system any more than an electrical wire can create extra electricity when you plug it into the wall. That’s actually a very good example, because when you’re listening to audio for instance, what we’re hearing is an electronic representation of acoustic sounds – that is to say, the actual sounds have not been captured and stuffed into a compact disc like fireflies in a child’s jar – they have been copied, imitated, and a representation stored on the disc as a series of numbers.
These numbers are then read and translated into electronic signals, which are sent to the speakers in order to approximate the actual sounds. With that in mind, it makes sense that poor quality wires don’t physically change the sound – instead it’s like a game of ‘telephone’, in which the band tells the CD, the CD tells the player, the player tells the wires, and the wires tell the speakers, with something being lost at every step so that the message “Aunt Betty baked a pie” is altered to “Fat Eddy wants to cry” or what should be a great live recording sounds tinny, distant, or otherwise just plain wrong.
A good cable will change the signal as little as possible, but all cables do damage your signal a bit – it’s simply a matter of degree. As far as which cables are the best? That’s up to you or your local audio guru to decide – much is up to personal preference, with the rest probably being left up to your budget to decide.
About Author:
Warren Thompson is fanatic about his new home theater system. He is also a contributing writer for hometheaterfocus.com – an immensely informative guide to home theater technology, with information about speaker positioning, home theater lighting, projection systems and more.
Consumer Electronics
Introduction:
The daily use of electronic equipments are known as consumer electronics and includes TV, telephone, DVD, CD, PC, laptop etc. These equipments are manufactured throughout the world. With the advancement in electronic engineering at a continuous pace, a number of new variety electronics items flood into the market every year and the cost the existing products reduces continuously and it is one of the biggest advantage of consumer electronics industry.
Electronic waste is one of the problems associated with these electronic item and many manufacturers are now planning to deal with these waste.
Semiconductor:
All electronic devices use semiconductors and without these semiconductors none of the electronic device is complete. Semiconductor behaves like an insulator at absolute zero (-273 degree centigrade) and can be distinguished from conductor that at this temperature the outermost filled electron energy band is completely filled in a semiconductor compare to the conductor in which the band is partially filled.
At room temperature semiconductor show a very small electrical conductivity much lower than that of conductor.
Doping in semiconductor:
Most common semiconductors used for electronic devices are silicon and germanium. Although some other conductors such as iridium phosphide, gallium arsenide and mercury cadmium telluride are also used.
A pure semiconductor also known as intrinsic semiconductor, when doped with electron rich element e.g. arsenic or electron deficient element e.g. boron in very small quantity, its conductivity increases and the resultant conductor is known as extrinsic conductor. My doping arsenic (electron rich) and boron (electron deficient) in silicon, we get n-type (negative type) and p-type (positive type) semiconductor devices.
We may create a p-n junction by doping different element in different region of semiconductor and the device is known as diode. Similarly we can create p-n-p or n-p-n junctions and the device is known as triodes.
Electronic Devices
(a) Television:
It is a device by which we can receive moving pictures and sounds over a distance. The whole transmission and receiver systems require the following inputs.
1.Camera for live images or flying spot scanner for transmission of films and sound source.
2.Transmitters for transmitting both images and sounds.
3.Receiver systems for receiving these signals.
4.Display device, which is either CRT, Rear projection, LCD or plasma. To display the signal in the forms of images and sounds.
(b) Telephone:
It is the device for communicating by which two persons can send and receive sound signals over a distance. The system requires the following inputs.
1.The telephone equipment, which converts sound signals to electrical signals and electrical signals to sound signals.
2.Central exchange from where the subscribers are interconnected.
3.Wiring for connecting all the subscribers.
(c) Calculators:
It is a device used for carry out various mathematical calculations. The input required for calculator are as given below.
1.Power source (battery or solar panel).
2.Display device (LED or LCD)
3.Keypad containing all functions and numbers.
4.All electronic circuit devices.
Electronic Waste:
These are the waste electronic devices and if properly utilized may be valuable secondary raw material source for various electronic equipments and if thrown out may act as toxic due to presence of various toxic materials including lead, mercury, cadmium, arsenic etc. uncontrolled burning of these materials may also cause environmental problems.
Electronic waste is sometimes illegally sent to other countries for processing. However, due to complexity and difficulties in recycling, e-waste will remain an issue for the coming days.
http://www.articlejoe.com/Article/Consumer-Electronics/21085
The daily use of electronic equipments are known as consumer electronics and includes TV, telephone, DVD, CD, PC, laptop etc. These equipments are manufactured throughout the world. With the advancement in electronic engineering at a continuous pace, a number of new variety electronics items flood into the market every year and the cost the existing products reduces continuously and it is one of the biggest advantage of consumer electronics industry.
Electronic waste is one of the problems associated with these electronic item and many manufacturers are now planning to deal with these waste.
Semiconductor:
All electronic devices use semiconductors and without these semiconductors none of the electronic device is complete. Semiconductor behaves like an insulator at absolute zero (-273 degree centigrade) and can be distinguished from conductor that at this temperature the outermost filled electron energy band is completely filled in a semiconductor compare to the conductor in which the band is partially filled.
At room temperature semiconductor show a very small electrical conductivity much lower than that of conductor.
Doping in semiconductor:
Most common semiconductors used for electronic devices are silicon and germanium. Although some other conductors such as iridium phosphide, gallium arsenide and mercury cadmium telluride are also used.
A pure semiconductor also known as intrinsic semiconductor, when doped with electron rich element e.g. arsenic or electron deficient element e.g. boron in very small quantity, its conductivity increases and the resultant conductor is known as extrinsic conductor. My doping arsenic (electron rich) and boron (electron deficient) in silicon, we get n-type (negative type) and p-type (positive type) semiconductor devices.
We may create a p-n junction by doping different element in different region of semiconductor and the device is known as diode. Similarly we can create p-n-p or n-p-n junctions and the device is known as triodes.
Electronic Devices
(a) Television:
It is a device by which we can receive moving pictures and sounds over a distance. The whole transmission and receiver systems require the following inputs.
1.Camera for live images or flying spot scanner for transmission of films and sound source.
2.Transmitters for transmitting both images and sounds.
3.Receiver systems for receiving these signals.
4.Display device, which is either CRT, Rear projection, LCD or plasma. To display the signal in the forms of images and sounds.
(b) Telephone:
It is the device for communicating by which two persons can send and receive sound signals over a distance. The system requires the following inputs.
1.The telephone equipment, which converts sound signals to electrical signals and electrical signals to sound signals.
2.Central exchange from where the subscribers are interconnected.
3.Wiring for connecting all the subscribers.
(c) Calculators:
It is a device used for carry out various mathematical calculations. The input required for calculator are as given below.
1.Power source (battery or solar panel).
2.Display device (LED or LCD)
3.Keypad containing all functions and numbers.
4.All electronic circuit devices.
Electronic Waste:
These are the waste electronic devices and if properly utilized may be valuable secondary raw material source for various electronic equipments and if thrown out may act as toxic due to presence of various toxic materials including lead, mercury, cadmium, arsenic etc. uncontrolled burning of these materials may also cause environmental problems.
Electronic waste is sometimes illegally sent to other countries for processing. However, due to complexity and difficulties in recycling, e-waste will remain an issue for the coming days.
http://www.articlejoe.com/Article/Consumer-Electronics/21085
MP3 Players – Many Capable Underdogs vs. the 800-lb. Gorilla
Anyone lover of gadgets and portable electronics knows what an Ipod is – and in fact, many people who have no interest in personal electronics know exactly what they are. With over 21 million units shipped, and over 75 per cent of the personal Digital Audio Player (DAP) market worldwide, it’s no surprise – Apple Computer Inc. has become the 800-lb. gorilla of portable music players.
What most people don’t know is the variety of alternatives to the Ipod – devices which can play music, videos, and more, and which accept Secure Digital (SD) cards, Compact Flash, and Memory Sticks, and replaceable (or rechargeable) AAA batteries, often for a lower price than a comparable Ipod. The iRiver devices offered by South Korean manufacturer Reigncom range from small players intended to hang on a keychain or as wearable jewelry style devices to full-fledged hard-drive based units pointed squarely at the Ipod’s market.
SanDisk (a maker of Secure Digital flash memory) offers the Sansa series of MP3 players, with the distinction of being able to accept the same SD cards as many digital cameras, offering additional storage options and the flexibility to swap music collections without long transfer times. Some of Samsung’s YP series of MP3 players offer a miniscule size, picture viewer and LCD monitor, all at a lower price than many competing units.
Although there are a variety of choices, one major reason for the Ipod’s dominance is the sheer irresistibility of its marketing. The unit is sleek and simple, stylized yet understated, much like the rest of Apple’s product offerings. For many Ipod owners, the device is a fashion accessory as much as a technological device – when walking down the street, the trademark white earbuds are clearly visible even from some distance.
So visible in fact that they have become an easy target for some muggers – but many Ipod owners would sooner risk robbery than trade in their favorite fusion of fashion accessory and music player. Many people find that a particular device simply suits their tastes better than all the rest, but in many cases, one device isn’t necessarily “better” than all of the others, only different and with more or fewer features. The selection of manufacturers and models presently available offers as wealth of choices for any portable audio lover, whether replacing an existing device or entering the world of digital audio for the first time.
About author:
What most people don’t know is the variety of alternatives to the Ipod – devices which can play music, videos, and more, and which accept Secure Digital (SD) cards, Compact Flash, and Memory Sticks, and replaceable (or rechargeable) AAA batteries, often for a lower price than a comparable Ipod. The iRiver devices offered by South Korean manufacturer Reigncom range from small players intended to hang on a keychain or as wearable jewelry style devices to full-fledged hard-drive based units pointed squarely at the Ipod’s market.
SanDisk (a maker of Secure Digital flash memory) offers the Sansa series of MP3 players, with the distinction of being able to accept the same SD cards as many digital cameras, offering additional storage options and the flexibility to swap music collections without long transfer times. Some of Samsung’s YP series of MP3 players offer a miniscule size, picture viewer and LCD monitor, all at a lower price than many competing units.
Although there are a variety of choices, one major reason for the Ipod’s dominance is the sheer irresistibility of its marketing. The unit is sleek and simple, stylized yet understated, much like the rest of Apple’s product offerings. For many Ipod owners, the device is a fashion accessory as much as a technological device – when walking down the street, the trademark white earbuds are clearly visible even from some distance.
So visible in fact that they have become an easy target for some muggers – but many Ipod owners would sooner risk robbery than trade in their favorite fusion of fashion accessory and music player. Many people find that a particular device simply suits their tastes better than all the rest, but in many cases, one device isn’t necessarily “better” than all of the others, only different and with more or fewer features. The selection of manufacturers and models presently available offers as wealth of choices for any portable audio lover, whether replacing an existing device or entering the world of digital audio for the first time.
About author:
Zed Hayden is utterly and completely addicted to consumer electronics, and a regular contributor to gizmocafe.com – an extremely biased guide to consumer electronics, with extensive information about Ringtones, Nintendo DS, portable audio players and more.
Save Time & Money Shopping for Electronic Items Online
When it’s time to find that special gift for a loved one or the birthday boy, do you head out to the shops in the hopes of stumbling across the perfect little electronic gadget? Even if you use the advertising circulars as a guide, that can often lead to a frustrating treasure hunt that burns you out while wasting your time and your money – and sends you home with a gift that’s not quite what you wanted in the first place. You’d think there’d be a better way. Well – there is. Whether you’re shopping for a cheap computer, an MP3 player, a digital TV or even a DVD movie, the smartest place to shop is sitting right in front of your computer.
It shouldn’t come as any surprise that it’s easy to find bargains on electronics online. Electronics and cheap computer parts and accessories were among the first merchandise to be sold regularly in online marketplaces and they continue to be the most popular type of items bought at online stores. The popularity of online shopping continues to grow, with total sales reaching into the tens of billions. Why would someone choose to purchase electronic items online rather than going out to the shops? The reasons are simple.
1. Shopping online is convenient. There’s no need to stop around to a dozen different merchants to find the best deal on a cheap computer. All you have to do is a simple search. You don’t even have to strain your mouse finger to visit a dozen websites anymore. There are some fantastic shopper services that make it easy to find the best price on that cheap computer or MP3 player all in one place.
2. There’s no traffic hassles, no crowded shops, no need to fill up the fuel tank on your auto. You can shop the entire world for the best possible price on whatever you want, whether it’s a digital TV or a DVD movie right from the ease of your favourite chair.
3. The internet is a very very big place. That means that you’re not bound into paying the prices you can find at your local stores. You can find great deals on cheap computer accessories (how about that neon glow in the dark mouse pad?), the best prices on the computer that you want, or the perfect DVD player from every corner of the world.
4. The internet is never out of stock. Looking for that DVD movie you’ve been dying to see, but the local shop is sold out? You’re sure to find it online – and with next day shipping, you can be watching it tomorrow evening instead of waiting two weeks for your local merchant to restock it.
5. You can find the latest models of everything from hard drives to flash drives, from DVD players to digital TVs, from cheap computer parts to completely kitted out superstar gaming computers. Most manufacturers announce their latest releases online first – and you can often order online weeks before the newest game console or digital toy is in the local shops.
When you shop online you can enjoy the convenience of shopping without ever leaving your home, save time, save money – and get the best quality electronic merchandise at the best prices in the world.
http://www.articlejoe.com/Article/Save-Time---Money-Shopping-for-Electronic-Items-Online/20615
It shouldn’t come as any surprise that it’s easy to find bargains on electronics online. Electronics and cheap computer parts and accessories were among the first merchandise to be sold regularly in online marketplaces and they continue to be the most popular type of items bought at online stores. The popularity of online shopping continues to grow, with total sales reaching into the tens of billions. Why would someone choose to purchase electronic items online rather than going out to the shops? The reasons are simple.
1. Shopping online is convenient. There’s no need to stop around to a dozen different merchants to find the best deal on a cheap computer. All you have to do is a simple search. You don’t even have to strain your mouse finger to visit a dozen websites anymore. There are some fantastic shopper services that make it easy to find the best price on that cheap computer or MP3 player all in one place.
2. There’s no traffic hassles, no crowded shops, no need to fill up the fuel tank on your auto. You can shop the entire world for the best possible price on whatever you want, whether it’s a digital TV or a DVD movie right from the ease of your favourite chair.
3. The internet is a very very big place. That means that you’re not bound into paying the prices you can find at your local stores. You can find great deals on cheap computer accessories (how about that neon glow in the dark mouse pad?), the best prices on the computer that you want, or the perfect DVD player from every corner of the world.
4. The internet is never out of stock. Looking for that DVD movie you’ve been dying to see, but the local shop is sold out? You’re sure to find it online – and with next day shipping, you can be watching it tomorrow evening instead of waiting two weeks for your local merchant to restock it.
5. You can find the latest models of everything from hard drives to flash drives, from DVD players to digital TVs, from cheap computer parts to completely kitted out superstar gaming computers. Most manufacturers announce their latest releases online first – and you can often order online weeks before the newest game console or digital toy is in the local shops.
When you shop online you can enjoy the convenience of shopping without ever leaving your home, save time, save money – and get the best quality electronic merchandise at the best prices in the world.
http://www.articlejoe.com/Article/Save-Time---Money-Shopping-for-Electronic-Items-Online/20615
Low Price Mobile Phones, ipods & Computers with the Online Shopping Revolution
There’s a revolution going on, but you won’t be hearing the shouting in the streets, unless it’s over the great deal that your neighbour got on his new home cinema. More and more UK consumers are doing their shopping for mobile phones, computers, cheap ipod accessories and ipods and home cinema equipment online. What kind of low prices can you expect when you let your fingers do the shopping on your keyboard?
How about the 4GB Nokia N91 Chromium mobile phone, a veritable jukebox that can carry along all of your favourite tunes and beats for a mere £387, a savings of nearly £100 off retail? Or the top rated Sony Ericsson at £129, a 30% savings off the manufacturer’s list price? Those are just a couple of examples of the sort of deals that you’ll find if you’re looking for low price mobile phones online.
If you’re shopping for computers, the discounts can cut even deeper. Computer manufacturers and discounting web sites are playing a game of ‘how low can you go’ with computer prices. By shopping online and comparing prices, you can find deals as low as £360 for a full desktop system with all the bells and whistles you need to do your basic computing and online puttering. If you want to get really fancy, though, you can do some hardcore shopping for the sort of accessories that make computers into one of a kind gaming machines.
How about an Ipod Shuffle for less than £50? A 30GB Ipod for less than £200? Shop online and you’ll find dozens of offers at prices that low, some with free postage and 1-2 day delivery. There’s virtually nothing you won’t be able to buy online, and for far less than you’ll pay at your local stores. Even home cinema equipment is priced at a bargain – and if you shop the right sites, they’ll even deliver it and set it up for you to be sure it’s all working right.
But is it safe to buy high value items like computers, Ipods and home cinema equipment online? According to no less an authority than Consumer Reports, a long time consumer watchdog keeping an eye on issues of product safety and consumer satisfaction, it’s not only safe, it may be better than shopping in a bricks and mortar store. In a recent survey, the well known magazine found that its’ readers were more satisfied with their experiences shopping online for consumer electronics like mobile phones, digital cameras and computers than they were with the same products bought in a local store.
You can find the best deals on mobile phones, computers, Ipod accessories and Ipods and home cinema equipment online where you can compare prices and offers to get the absolute best, lowest price on all your home and entertainment electronics needs.
http://www.articlejoe.com/Article/Low-Price-Mobile-Phones--ipods---Computers-with-the-Online-Shopping-Revolution/20485
How about the 4GB Nokia N91 Chromium mobile phone, a veritable jukebox that can carry along all of your favourite tunes and beats for a mere £387, a savings of nearly £100 off retail? Or the top rated Sony Ericsson at £129, a 30% savings off the manufacturer’s list price? Those are just a couple of examples of the sort of deals that you’ll find if you’re looking for low price mobile phones online.
If you’re shopping for computers, the discounts can cut even deeper. Computer manufacturers and discounting web sites are playing a game of ‘how low can you go’ with computer prices. By shopping online and comparing prices, you can find deals as low as £360 for a full desktop system with all the bells and whistles you need to do your basic computing and online puttering. If you want to get really fancy, though, you can do some hardcore shopping for the sort of accessories that make computers into one of a kind gaming machines.
How about an Ipod Shuffle for less than £50? A 30GB Ipod for less than £200? Shop online and you’ll find dozens of offers at prices that low, some with free postage and 1-2 day delivery. There’s virtually nothing you won’t be able to buy online, and for far less than you’ll pay at your local stores. Even home cinema equipment is priced at a bargain – and if you shop the right sites, they’ll even deliver it and set it up for you to be sure it’s all working right.
But is it safe to buy high value items like computers, Ipods and home cinema equipment online? According to no less an authority than Consumer Reports, a long time consumer watchdog keeping an eye on issues of product safety and consumer satisfaction, it’s not only safe, it may be better than shopping in a bricks and mortar store. In a recent survey, the well known magazine found that its’ readers were more satisfied with their experiences shopping online for consumer electronics like mobile phones, digital cameras and computers than they were with the same products bought in a local store.
You can find the best deals on mobile phones, computers, Ipod accessories and Ipods and home cinema equipment online where you can compare prices and offers to get the absolute best, lowest price on all your home and entertainment electronics needs.
http://www.articlejoe.com/Article/Low-Price-Mobile-Phones--ipods---Computers-with-the-Online-Shopping-Revolution/20485
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