Question

what is the function of modem?

Answer 1

Modem stands for MOdulator/DEModulator. A modem converts digital signals generated by the computer into analog signals which can be transmitted over a telephone or cable line and transforms incoming analog signals into their digital equivalents.

Answer 2

Answer:

The abbreviation of modem is  Modulator - Demodulator. Analog technology  used to deliver the messages across phone lines. while the computer network works in digital mode.

• Modem is useful for data transfer from one computer to another computer network through telephone lines.

• The device that performs modulation is known as a modulator and the device that recovers the information signal from the modulated carrier is known as a demodulator.
• We usually come across devices  in the data transmission, which perform both modulation and demodulation functions and these devices are modems.
• Modems are needed, when data have to be transmitted over long distances. The input signal modulates a carrier in the modem which is transmitted to the distant end.
• Another modem demodulators at the distant end received carrier to get the digital signal. Therefore, one pair of modems is always needed.

• The function of modulator to convert the information from digital mode to analog mode at the transmitting end. Demodulator converts the same from analog to digital at receiving end. The process of converting analog signals is referred as digitizing.