Rocky Mountain Computer Supply

Serving Helena and the Surrounding Areas Since 2002

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What's a modem and what does it do?

Modem

(MOdulator-DEModulator) A device that connects a computer to a telephone line. It converts the computer's digital pulses into audio frequencies (analog) for the telephone system and converts the frequencies back into digital pulses at the receiving side. The modem also dials the line, answers the call and controls transmission speed, which ranges from 300 to 33,600 bps and higher.