The word "modem" is short for "modulator-demodulator" which is essentially what it does. A computer moves data around on parallel wires by applying one or another voltage to each wire (representing...
Modem is a device used to communicate with remote users primarilythrough the Internet. the modem is used to convert digital data to the computer analoguesignal modulated
ADSL is not considered a "true" modem because it is completely digital and does not perform the modulation and demodulation (mo/dem) of converting analog signals into digital ones.