Question

pls..give this answer
Why we need modem?​

Answer 1

Telephones are amazing: they can carry the sound of your voice from one side of the world to the other in a matter of seconds by making electricity flow down a wire. Telephones are also the power behind the Internet—without them, it would be almost impossible for most of us to go online.

The marriage of the telephone (a 19th-century technology) with the computer (a 20th-century innovation) was something of a shotgun wedding. Computer technology is largely digital: it involves storing, processing, and transmitting information in the form of numbers. But telephone technology is still partly analog: information is transmitted down phone lines as continuously varying electrical signals. How, then, do digital computers communicate across analog telephone lines designed to carry speech? Simple: they use modems, devices that turn digital information into analog sound signals for the telephone journey and then turn it back again at the other end. Think of modems as translators. Computers speak digital, and telephones speak analog, so you need modems to translate between the two.