There is a complete system for computers to complete various tasks. This system is composed of two major parts: hardware system and software system, and neither of them is indispensable.[1]Computer equipment is a variety of machines used to assist the normal operation of computers.
Chinese name
Computer equipment
Foreign name
computer equipment
Definition
Machinery used to assist the normal operation of computers
All parts of the host in the microcomputer are placed in the host box. The host box plays the role of fixing and protecting all parts. The power switch, indicator light, USB interface, headset jack, etc. can be seen from the outside front of the host box, and the motherboard, CPU, memory strip, hard disk, optical drive, display card, sound card, power supply, etc. can be seen when the host box is opened.
monitor
host
monitorAlso called monitor, it displays the results of computer processing on the screen in a form that people can recognize. It is one of the most important output devices of computers.Common displays fall into two categories:Cathode ray tube display(CRT for short) and liquid crystal display (LCD for short).CRTflat panel monitorIt has the advantages of large viewing angle, high color reproduction, extremely short response time, adjustable multi-resolution mode and low price;On the other hand, LCD has the advantages of light volume, low power consumption, flicker free image and low radiation.
printer
printer
The printer is another important output device of the computer, which can print the documents in the computer on the relevant media.There are many types of printers, which can be divided intoNeedle printer、Ink jet printerandLaser printer。Needle printers are used less and less because of their slow printing speed and poor printing quality;The advantages of inkjet printer are low equipment cost and color effect printing, but the ink cartridge is expensive and the use cost is high;The laser printer has fast printing speed and good printing quality, but the equipment is expensive.
keyboard
keyboard
The keyboard is the most commonly used computer input device. From the appearance, a group of keys are arranged on the keyboard. By tapping these keys, English, numbers and punctuation information can be input into the computer, so as to send instructions or input data information to the computer.
mouse
mouse
The mouse is also called a mouse because it looks like a mouse.The mouse is often used for cursor positioning, clicking on menus or selecting objects, which can make computer operation more convenient.The mouse can be divided into mechanical mouse and photoelectric mouse according to its working principle;The number of keys on the mouse can be divided into two button mouseThree button mouseAnd multi button mouse.
camera
camera
The camera is a digital video input device, which uses photoelectric technology to collect images, and then transmits them to the computer through data lines for processing. The processed results are stored in the computer or transmitted on the network.
Scanner
Scanner
A scanner is an input device that captures an image or text by scanning and inputs it into a computer, and then edits, processes, stores or outputs the input image or text through the computer.The scanner can scan photos, newspaper pages, drawings, art pictorials, negative films, etc.[1]
Computer device conflict failure
Announce
edit
After a new bulletin board is inserted into the computer, a program cannot run, or a part of the computer cannot work, or even the entire computer cannot be operated.In fact, this kind of problem is not a new card problem, but a device conflict between it and other computer devices.
A computer device must be able to communicate with the host in order to work properly.However, after the card is inserted into the computer, it often conflicts with the existing computer and cannot work normally.The most common and easy resource conflict isIRQ, DMA and I/0 conflict.[2]
