What are the common interfaces in computers?

What are the common interfaces in computers?

Common interfaces in computers include the following:

Power interface, PS/2 interface, serial interface, parallel interface, RJ-45 (network) interface, USB interface , audio interface, IEEE1394 interface.

1. Power interface As the name suggests, it is the interface that connects our computer host to our power supply. Because our computer requires power supply to work, the power interface is very important to our computer host. important.

2. PS/2 interface is used to connect our mouse and keyboard devices. This interface is a relatively early computer interface. Generally, the interface connecting the mouse is green and the interface connecting the keyboard is purple.

3. The serial port is called serial interface. Today’s PCs generally have at least two serial ports, COM1 and COM2. The serial port is different from the parallel port in that its data and control information are transmitted serially one by one. Usually COM 1 uses a 9-pin D-shaped connector, also called the RS-232 interface, while COM 2 sometimes uses the old DB25-pin connector, also called the RS-422 interface, but it is now very popular. Use sparingly.

4. Parallel interface is mainly used as a printer port, using a 25-pin D-shaped connector. The so-called "parallel" means that 8-bit data is transmitted through parallel lines at the same time. In this way, the data transmission speed is greatly improved, but the length of the parallel transmission line is limited. Because the length increases, the interference will increase and the data will be prone to errors. At present, computers are basically equipped with parallel port

5 and RJ-45 (network) interface , which is used to connect the computer network card to the LAN or to the Internet through an ADSL modem. Usually connected to what we call a "crystal head", its main purpose is for data exchange between our computers and the Internet.

6. USB interface is the abbreviation of Universal Serial Bus, which is used to standardize the connection and communication between computers and external devices. The USB interface supports plug-and-play and hot-swappable functions of the device. This means that when using external devices, users do not need to turn off and on again to use them. Instead, they can use USB devices directly while working on the computer.

Audio interface Generally there are two on the computer host, one is used to connect headphones, speakers, etc., for the output of audio signals; the other is used to connect the microphone, for audio enter.

7. IEEE1394 interface is mainly used to access digital cameras.

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