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This article is about what kind of equipment is necessary for two computers to transmit data signals using telephone lines. The editor thinks it is very practical, so share it with you as a reference and follow the editor to have a look.

When two computers use a telephone line to transmit data signals, the necessary equipment is a modem; a modem is an acronym for modulator and demodulator, a computer hardware that translates a computer's digital signal into an analog signal that can be transmitted along an ordinary telephone line, which in turn can be received by another modem at the other end of the line.

When two computers use telephone lines to transmit data signals, the necessary equipment is a modem.

A modem, an acronym for modulator and demodulator, is a computer hardware that translates a computer's digital signal into an analog signal that can be transmitted along an ordinary telephone line. These analog signals can be received by another modem at the other end of the line and translated into a language that the computer can understand. This simple process completes the communication between the two computers.

Modem is the abbreviation of Modulator (modulator) and Demodulator (demodulator), which is called modem in Chinese. According to the homonym of Modem, modem is called "cat" affectionately. It is a kind of electronic equipment which can realize the modulation and demodulation function needed for communication.

It generally consists of a modulator and a demodulator. At the transmitting end, the digital signal generated by the computer serial port is modulated into an analog signal that can be transmitted through the telephone line; at the receiving end, the modem converts the analog signal input to the computer into a corresponding digital signal and sends it to the computer interface.

In personal computers, modems are often used to exchange data and programs with other computers, and to access online information service programs.

The so-called modulation is to convert the digital signal into the analog signal transmitted on the telephone line; demodulation is to convert the analog signal into digital signal. Collectively known as modems.

The modem is called MODEM in English, and its function is to translate both analog and digital signals.

There are two kinds of electronic signals, one is "analog signal" and the other is "digital signal". The telephone lines we use transmit analog signals, while PCs transmit digital signals.

So when you want to connect your computer to the Internet through a phone line, you have to use a modem to "translate" two different signals.

After connecting to the Internet, when the PC sends information to the Internet, because the telephone line transmits an analog signal, the digital signal must be "translated" into an analog signal by a modem before it can be transmitted to the Internet. This process is called "modulation".

When the PC gets the information from the Internet, because the information transmitted from the Internet through the telephone line is all analog signals, so if the PC wants to understand them, it must use the modem as a "translation", a process called "demodulation". Generally speaking, it is called "modulation and demodulation".

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