The Modem

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The modem is technically called the modulator-demodulator. It is an electronic device which helps transmit programs and data locally or around the world through the telephone line. The main function of a modem is to transform digital signals in to analog signals and vice versa.

With a modem you can subscribe to a growing number of online and bulletin board services or communicate with other computers located elsewhere which have modems attached to them.

A modem may be a card mounted inside the PC or it may be a separate piece of equipment that connects to the serial port of PC via a cable. Telephone lines that connect the modem to the telephone service.

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