because internet that comes down a telephone line are analogue signals and the computer on understands digital signals ( 1 and 0s , Machine code, binary) so the modem translates the analogue signals from the phone line to digital and translates digital signals from the computer to analogue
FUNCTIONS OF MODEM
communication
The modem is what detects communication signals then goes to the device.
1.CDMA System 2.cable modem 3.video conferencing 4.in satellite communication
modem
A modem
He invented the PC Modem. Without his invention you probably wouldn't have posted this question right now.
modem
it is connected with vsystem for communication
The Modem
I wouldn't say an "electrical" component, but a modem is very similar to a DAC (digital-to-analog converter) or ADC (analog-to-digital converter) like in sound chipsets (or sound cards) preinstalled in a computer or a dedicated separate sound system used in a home theater or a production studio.
Modem is an acronym for modulator-demodulator. It is a device which makes communication between computers and other devices possible by converting data to a form which the phone or cable lines can transmit.