O'Reilly logo

Online! The Book by Wendy Taylor, Chris Pirillo, John C. Dvorak

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

Chapter 17. How a Modem (Really) Works

Modems have become an integral part of everyday life. They are taken for granted. We use them daily perhaps without even thinking about it. We use them to connect to the Internet to surf the Web, read an email message, or send a fax. Modems are everywhere: in the malls and gas stations where we use our credit cards; ATMs for instant cash; vending machines even have modems to monitor product inventory; and in many other devices we come into contact with every day. Few of us are probably aware how big a role modems play in our modern lives.

A hint as to what a modem does can be found in the word itself. Modem is actually a contraction of two words: modulate and demodulate. In its simplest form, the modem ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required