What is a computer modem?

A modem is a device that enables a computer to send and receive data over a telephone line or other communication link.

Modems can be internal or external. Internal modems are installed in a computer, while external modems are connected to a computer by a cable.

Modems are available in different speeds. The speed of a modem is measured in bits per second (bps). The higher the speed, the faster the modem can send and receive data.

Most modems use a technology called Asynchronous Transfer Mode (ATM) to send and receive data. ATM is a …