What is modem in english
A modem, short for modulator-demodulator, is a communication device that facilitates the transmission of digital data over analog communication channels. The primary function of a modem is to convert digital signals from a computer or other digital devices into analog signals suitable for transmission over analog communication lines, such as telephone lines, and to convert incoming analog signals back into digital form. Here's an overview of how modems work and their key components: 1. **Modulation (Modulator):** In the sending device (such as a computer), the modem modulates digital data into analog signals. Modulation involves varying the characteristics of a carrier wave, such as its amplitude, frequency, or phase, to represent the binary data. This modulated signal is then suitable for transmission over analog communication mediums. 2. **Demodulation (Demodulator):** On the receiving end, the modem demodulates the incoming analog signal back into digital data. Demodulation is
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