Question

what is modem? and its role?

Answer 1

-Connecting to the internet
xD

Answer 2

A modem is a "device connecting computers via phone line: an electronic device that connects computers via a telephone line, allowing the exchange of information. It consists of a modulator to convert computer information into a telephone signal and a demodulator to convert it back again."

It's role is just to connect you to the Internet^^

Answer 3

it is the device which is used to connect internet. it plays major role by converting analog signal to digital and digital to analog