MODEM J.Padmavathi. Origin of Modems The word "modem" is a contraction of the words modulator-demodulator A modem is typically used to send digital data. - ppt download
File:External rs232 serial dialup fax modem.jpg - Wikimedia Commons
DSL modem - Wikipedia
Difference between Modem and Router - javatpoint
What is a Modem? Connecting You to The Web Everyday