Dummies Click on the various components on the image below to get an in depth view.
To demonstrate the various components driving computer networks in general, and specifically - the Internet, let us assume that you are at home, writing an electronic mail message to your uncle, who works on the other side of the worlds. You know that once you send your mail, it will somehow make itself to you uncle's computer. Connection from your computer to the ISP's computers will probably be made through the phone, using a device called a modem . The modem enables your computer to transmit digital data over the phone lines, which are analog. The data passed between the two computers is decoded using computer protocols .