Must Download How DSL Work [ Complete Hand Book ]

How DSL Works
by Curt Franklin
 

When you connect to the Internet, you might connect through a regular modem, through a local-area network connection in your office, through a cable modem or through a digital subscriber line (DSL) connection. DSL is a very high-speed connection that uses the same wires as a regular telephone line.

Here are some advantages of DSL:

• You can leave your Internet connection open and still use the phone line for voice calls.
• The speed is much higher than a regular modem (1.5 Mbps vs. 56 Kbps)
• DSL doesn't necessarily require new wiring; it can use the phone line you already have.
• The company that offers DSL will usually provide the modem as part of the installation.

But there are disadvantages:

• A DSL connection works better when you are closer to the provider's central office.
• The connection is faster for receiving data than it is for sending data over the Internet.
• The service is not available everywhere.

In this article, we explain how a DSL connection manages to squeeze more information through a standard phone line -- and lets you make regular telephone calls even when you're online!

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How Computer Keyboards Work [ Complete Hand Book ]

How Computer Keyboards Work
by Jeff Tyson
 

The part of the computer that we come into most contact with is probably the piece that we think about the least. But the keyboard is an amazing piece of technology. For instance, did you know that the keyboard on a typical computer system is actually a computer itself?

At its essence, a keyboard is a series of switches connected to a microprocessor that monitors the state of each switch and initiates a specific response to a change in that state. In this edition of How Stuff Works, you will learn more about this switching action, and about the different types of keyboards, how they connect and talk to your computer, and what the components of a keyboard are.

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How CDs Work [ Complete Hand Book ]

How CDs Work
by Marshall Brain

CDs and DVDs are everywhere these days. Whether they are used to hold music, data or computer software, they have become the standard medium for distributing large quantities of information in a reliable package. Compact discs are so easy and cheap to produce that America Online sends out millions of them every year to entice new users. And if you have a computer and CD-R drive, you can create your own CDs, including any information you want. 

In this article, we will look at how CDs and CD drives work. We will also look at the different forms CDs take, as well as what the future holds for this technology.

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How CD Burners Work [ Complete Hand Book ]

How CD Burners Work
by Tom Harris
 

In 2000, one of the biggest news stories was the rise of Napster and similar file-sharing programs. With these programs, you could get an MP3 version of just about any song you want without shelling out a dime. The record companies were fairly upset over this turn of events, and understandably so: They weren't making any money off the distribution of their product to millions of people.

But there was money to be made on the "Napster revolution," as electronics manufacturers and retailers soon discovered. In 1999, 2000 and early 2001, sales of CD burners and blank CD Recordable discs skyrocketed. Suddenly it was feasible for the average person to gather songs and make their own CDs, and music-mix makers everywhere wanted to get their hands on the means of production. Today, writable CD drives (CD burners) are standard equipment in new PCs, and more and more audio enthusiasts are adding separate CD burners to their stereo systems. In less than five years, CDs have eclipsed cassette tapes as the mix medium of choice. 

In this article, you'll find out how CD burners encode songs and other information onto blank discs. We'll also look at CD re-writable technology, see how the data files are put together and find out how you can make your own music mixes with a CD burner.

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How Webcams Work [ Complete Hand Book ]

How Webcams Work
by Marshall Brain

If you have been exploring the Web for any length of time, then you have run across any number of Webcams in your travels. Webcams range from the silly to the serious -- a Webcam might point at a coffee pot or a space shuttle launch pad. There are business cams, personal cams, private cams, traffic cams... you name it and there's probably a Webcam pointed at it!

Have you ever considered setting up a Webcam yourself? You might want to create a silly cam by pointing it at your hamster or putting it inside your refrigerator. But it turns out there are lots of productive uses for Webcams, too. 

For example:

• You will be out of town for a week and you want to keep an eye on your house plants.
• You'd like to be able to check on the baby sitter and make sure everything is okay while you are at work.
• You'd like to know what your dog does in the back yard all day long.
• You want to let the grandparents watch the new baby during nap time.

If there is something that you would like to monitor remotely, a Webcam makes it easy!
In this article, we will look at the steps you can take to put up your own simple Web camera.

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How Caching Work [ Complete Hand Book ]

How Caching Works
by Guy Provost
 

If you have been shopping for a computer, then you have heard the word "cache." Modern computers have both L1 and L2 caches. You may also have gotten advice on the topic from well-meaning friends, perhaps something like "Don't buy that Celeron chip, it doesn't have any cache in it!"
 

It turns out that caching is an important computer-science process that appears on every computer in a variety of forms. There are memory caches, hardware and software disk caches, page caches and more. Virtual memory is even a form of caching. In this article, we will explore caching so you can understand why it is so important.

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How Cable Modems Work [ Handy Book Recommended For All]

How Cable Modems Work
by Curt Franklin

For millions of people, television brings news, entertainment and educational programs into their homes. Many people get their TV signal from cable television (CATV) because cable TV provides a clearer picture and more channels.

Many people who have cable TV can now get a high-speed connection to the Internet from their cable provider. Cable modems compete with technologies like asymmetrical digital subscriber lines (ADSL). If you have ever wondered what the differences between DSL and cable modems are, or if you have ever wondered how a computer network can share a cable with dozens of television channels, then read on. In this article, we'll look at how a cable modem works and see how 100 cable television channels and any Web site out there can flow over a single coaxial cable into your home.

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How Bits and Bytes Work [ Complete Hand Book ]

How Bits and Bytes Work
by Marshall Brain
 

If you have used a computer for more than five minutes, then you have heard the words bits and bytes. Both RAM and hard disk capacities are measured in bytes, as are file sizes when you examine them in a file viewer.
You might hear an advertisement that says, "This computer has a 32-bit Pentium processor with 64 megabytes of RAM and 2.1 gigabytes of hard disk space." And many HowStuffWorks articles talk about bytes (for example, How CDs Work). In this article, we will discuss bits and bytes so that you have a complete understanding.

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How Banner Ads Work [ Complete Hand Book]

How Banner Ads Work
by Tom Harris 

 

If you've spent any time surfing the Internet, you've seen more than your fair share of banner ads. These small rectangular advertisements appear on all sorts of Web pages and vary considerably in appearance and subject matter, but they all share a basic function: if you click on them, your Internet browser will take you to the advertiser's Web site. But how do they work and why are they there?
Banner ads are usually relatively simple pieces of HTML code, but their presence on the Web and their importance in Internet-based business is immense. In this edition of How Stuff Works, we'll examine banner ads and their place on the Internet. We'll see how they work, how advertisers rate their effectiveness, and how you can use them to advertise your site or bring in revenue. We'll also examine the technology behind them and look at some of the different forms they can take. By the end of this article, you will be a banner ad expert!

Very useful for all learners and web designers

 

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How ASPs Work Complete PDF Hand Book

How ASPs Work

Complete PDF Hand Book
by Marshall Brain
 

The Web and the Internet began to really heat up and receive significant media exposure starting around 1994. Initially, the Web started as a great way for academics and researchers to distribute information; but as millions of consumers flocked to the Internet, it began to spawn completely new business models. Three good examples of innovative models include:

• Amazon - Amazon (which opened its doors in July, 1995) houses a database of millions of products that anyone can browse at any time. It would have been impossible to compile a list this large in any medium other than the Web.
• Ebay - Online auctions make it easy and inexpensive for millions of people to buy and sell any imaginable item. It would be impossible to do this at a reasonable cost or in a timely manner with any medium other than the Web.
• Epinions - Thousands of people contribute to a shared library of product reviews. One of the Web's greatest strengths is its worldwide view and collaborative possibilities.

These different business models are all visible to anyone surfing the Web. One of the most interesting behind-the-scenes business models that the Web has created is called the ASP, or Application Service Provider. ASPs are a completely new way to sell and distribute software and software services. Although ASPs were possible before the advent of the Web, the Web makes them so easy to create that they have proliferated hugely in the last several years.

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How 3D PC Glasses Work [Complete PDF Book]

How 3-D PC Glasses Work 

Complete PDF Book

by Shane Speck
 

Only a few years ago, seeing in 3-D meant peering through a pair of red-and-blue glasses, or trying not to go cross-eyed in front of a page of fuzzy dots. It was great at the time, but 3-D technology has moved on. Scientists know more about how our vision works than ever before, and our computers are more powerful than ever before -- most of us have sophisticated components in our computer that are dedicated to producing realistic graphics. Put those two things together, and you'll see how 3-D graphics have really begun to take off.

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