Modem tells its meaning and role

        My friend said that it was strange recently that when the local IP address was set to the computer, the modem was prompted to be deleted. do not know the meaning. I believe that many of my friends don't understand this question. What is the modem that is prompted here? The following article will share with you what the modem is and its role, etc. Interested friends may wish to understand. What is a modem? Professionally speaking, the combination of a modulator and a demodulator is a conversion interface that enables digital data to be transmitted on an analog signal transmission line. In a computer, a modem generally refers to a Modem, and everyone likes to call it a "cat." It is a device for converting signals between a computer and a telephone line. It consists of a modulator and a demodulator. The modulator modulates a computer's digital signals (such as files) into sound signals that can be transmitted over the telephone line. At the receiving end, the demodulator converts the sound signal into a digital signal that the computer can receive. The data communication between the computers can be realized through the modem and the telephone line, and is divided into built-in external devices, etc., and the general household computers are all external, and the cats need to be purchased separately to realize dial-up Internet access. What is the use of the modem? The role of the cat is believed to be understood by everyone. It is mainly used for dial-up Internet access. At present, many households are dial-up Internet access, and the modem we use here is what we call. It is a must-have hardware device for dialing into the Internet by telephone. Usually the "digital signal" is used inside the computer, and the signal transmitted through the telephone line is "analog signal". The function of the modem is to convert the digital signal used inside the computer into an analog signal that can be transmitted by the telephone line when the computer sends the information, and send it out through the telephone line; when receiving the information, convert the analog signal uploaded from the telephone line into a digital signal. Transfer to a computer for reception and processing. Introducing here I believe that everyone has already understood what the modem is. In fact, it is easy to understand. In a nutshell, the modem is Modem. We used to call it the role of "cat" to convert the analog signal of the telephone line into a computer. The digital signal is recognized, so that the data transmission can be realized. Everyone can understand it. When the computer encounters a modem-related fault problem later, it is known that it may be related to the cat.