Modem comes from the 2 words Mod ulation & Dem odulation. A Modem converts information from Analog to Digital & vice versa. Digital Information is represented in a series of 1's & 0's. Analog information varies continuously such as a sound wave. Typical when you send an E-mail, your Modem converts the digital E-mail message to analog.
Meaning of MODEM in English
English glossary of Internet and PC terminology. Английский глоссарий Интернет и ПК терминологии. 2012