What does pc device mean?
PC (personal computer), the term comes from IBM's first desktop computer model PC in 1981, before which there was the Apple II personal computer.
A personal computer is composed of a hardware system and a software system. It is a device that can run independently and complete specific functions.
Related introduction:
The computer has a complete system to complete various tasks. This system consists of two parts: the hardware system and the software system, both of which are indispensable. Computer equipment is a variety of machinery used to assist the normal operation of computers.
Commonly used computer equipment
Host
All components of the host in the microcomputer are placed in the main chassis. The main chassis plays a role in fixing and protecting the components. From the host The power switch, indicator light, USB interface and headset jack can be seen on the outside front of the box. When you open the main box, you can see the motherboard, CPU, memory stick, hard disk, optical drive, display card, sound card and power supply.
Monitor
The monitor is also called a 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 the computer. Common displays are divided into two categories: cathode ray tube displays (CRT for short) and liquid crystal displays (LCD for short). CRT flat-screen monitors have the advantages of large viewing angles, high color reproduction, extremely short response time, adjustable multi-resolution modes, and lower prices; while LCD monitors have the advantages of being thin and light, consuming less power, flickering-free images, and low cost. Radiation and other advantages.
Printer
The printer is another important output device of the computer. It can print the file information in the computer on related media. There are many types of printers, which can be divided into dot matrix printers, inkjet printers and laser printers according to their working principles. Dot matrix printers have slow printing speed and poor printing quality, and are now used less and less; inkjet printers have the advantage of low equipment cost and can print color effects, but the ink cartridges are more expensive and the use cost is higher; laser printers print quickly , The printing quality is good, but the equipment is more expensive.
Keyboard
The keyboard is the most commonly used computer input device. From the appearance, the keyboard is arranged with a group of keys. By tapping these keys, English, numbers and punctuation information can be entered. Input into the computer to issue instructions or input data information to the computer.
Mouse
The mouse is also called a mouse, so named because it is shaped like a mouse. The mouse is often used for operations such as cursor positioning, clicking on menus, or selecting objects, and can make computer operation easier. Mouse can be divided into mechanical mouse and optical mouse according to its working principle; according to the number of buttons on the mouse, it can be divided into two-button mouse, three-button mouse and multi-button mouse.
Camera
The camera is a digital video input device that uses photoelectric technology to collect images and then transmits them to the computer for processing through data lines. The processed results are stored in the computer or in the computer. transmitted over the network.
Scanner
A scanner is an input device that captures images or text and inputs them into a computer through scanning, and then edits, processes, stores or outputs the input images or text through the computer. The objects that the scanner can scan include photos, book and newspaper pages, drawings, art illustrated magazines, negative films, etc.
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