Shulou(Shulou.com)05/31 Report--

Hello everyone, Lin Fei to answer the above questions, how to restart the modem, many people do not know the modem, now let's take a look!

1. Modem (modem), what does modem mean?

2. A modem is a kind of computer hardware that translates computer digital signals into pulses that can be transmitted along an ordinary telephone line, which can be received by another modem at the other end of the line. and translated into a computer-readable language. This simple process completes the communication between the two computers.

3. Modem, in fact, is the abbreviation of Modulator and Demodulator. It is called modem in Chinese (called modem by RTHK). According to the homonym of Modem, it is called "cat" affectionately.

4. Modulation is the conversion of a digital signal into an analog signal transmitted on a telephone line. Demodulation, that is, converting an analog signal into a digital signal. Collectively referred to as a modem

5. Modem English is MODEM, which acts as a "translator" for analog and digital signals. There are two kinds of electronic signals, one is' analog signal', the other is' digital signal'. The telephone line we use transmits analog signals, while PCs transmit digital signals. Therefore, when you want to connect your computer to the Internet through a phone line, you must use a modem to "translate" two different signals. After connecting to the Internet, when PC sends information to the Internet, because the phone line transmits an analog signal, a modem is needed to "translate" the digital signal into an analog signal before it can be transmitted to the Internet. This process is called "modulation". When the PC gets the information from the Internet, the information transmitted from the Internet through the telephone line is an analog signal, so the PC

6. If you want to understand them, you must also use a 'modem' to translate, a process called demodulation. It is generally called a 'modem'.

7. The English name of the modem is MODEM, also known as "Cat", which is the abbreviation of two words: MODULATER and DEMODULATER. We know that the language between computers is a digital signal composed of 0 and 1, while the signal transmitted by the telephone line is an analog signal. Each set of transmissions requires a pair of modems to complete. The A modem on the A machine converts the digital signal of the A machine into an analog signal that can be transmitted by the telephone line, and then transmits it to the B modem through the telephone line. B-Modem then converts the received analog signal into a digital signal that can be recognized by the computer, and transmits it to the B machine, thus realizing the communication between the two computers.

An and A modems are your computer and demodulator, while B and B modems are dial-up servers at one end of the telecommunications office. After connecting, the computer establishes a physical connection with the dial-up server at one end of the telecommunications bureau, and on the basis of this physical connection, you can enjoy Internet services.

The modems used on ordinary telephone lines are called analog modems. The theoretical download rate of 56K analog modem on ordinary lines is 53333Bps, while the upload rate is 33.6KBps.

10. On an ordinary telephone line, two 56K modems are used to connect with a maximum connection rate of 33.6K because the download of A-Modem is the upload of B-Modem, while the download of B-Modem is the upload of A-Modem. The maximum connection rate is 33.6K, which is limited by the modem upload rate of 33.6KBps on ordinary lines. Most of the 33.6K modems have been discontinued.

11. Connect 163,167and other ISP on the ordinary telephone line. Provide 56K access, usually can reach a connection speed of about 50K. This is because the modems of 163, 167 and other local telephone offices are digital modems, if matched with a suitable modem, it can reach or even exceed the theoretical value on the ordinary line, and the quality is very good.

At the end of this article, I hope it will be helpful to you.

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