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This article mainly introduces what kind of computer the PC is. It is very detailed and has certain reference value. Interested friends must finish reading it.

PC, also known as personal computer, belongs to microcomputer, which is often called microcomputer. Microcomputer is a small electronic computer composed of large-scale integrated circuits, which is characterized by small size, great flexibility, cheap price and easy to use. Microcomputer can be divided into: workstation, server, industrial control computer, personal computer, embedded computer.

PC, also known as personal computer (Personal Computer), belongs to microcomputer. The microcomputer is characterized by small size, great flexibility, cheap price and easy to use.

Microcomputer is referred to as "microcomputer" and "microcomputer" for short. Because it has some functions of human brain, it is also called "microcomputer". A microcomputer is a small electronic computer composed of large-scale integrated circuits. It is a bare metal based on microprocessor, equipped with internal memory, input and output interface circuit and corresponding auxiliary circuit.

There are three levels of microcomputer system from global to local: microcomputer system, microcomputer and microprocessor (CPU). Neither a simple microprocessor nor a simple microcomputer can work independently, and only the microcomputer system is a complete information processing system, which has practical significance.

A complete microcomputer system includes two parts: hardware system and software system. The hardware system is composed of arithmetic unit, controller, memory (including memory, external memory and cache), various input and output devices, and works in "instruction-driven" mode.

Software system can be divided into system software and application software. System software refers to the software that manages, monitors and maintains computer resources (including hardware and software). It mainly includes: operating system, various language processing programs, database management system and various tools and software, etc. Among them, the operating system is the core of the system software, and users can complete all kinds of operations on the computer only through the operating system. Application software is a computer program for a certain application purpose, such as word processing software, graphics and image processing software, network communication software, financial management software, CAD software, various program packages and so on.

Classification of microcomputers:

Workstation

Workstation is a kind of high-end general-purpose microcomputer, which is based on personal computer and distributed network computing. It is mainly oriented to professional application fields, and has powerful capabilities of data operation, graphics and image processing. It is a high-performance computer designed and developed to meet the needs of engineering design, animation production, scientific research, software development, financial management, information services, simulation and other professional fields. It belongs to a kind of high-grade computer, which generally has a large screen display and a large capacity of memory and hard disk, as well as strong information processing function, high-performance graphics and image processing function and networking function.

Server

The server refers to some high-performance computers, which can provide services through the network. Compared with the ordinary computer, the requirements of stability, security and performance are higher, so the hardware such as CPU, chipset, memory, disk system, network and so on are different from the ordinary computer. The server is the node of the network, which stores and processes 80% of the data and information on the network, and plays an important role in the network. Server is a high-performance computer that provides a variety of services for client computers, and its high performance is mainly manifested in high-speed computing power, long-term reliable operation, strong external data throughput and so on. The composition of server is similar to that of ordinary computer, including processor, hard disk, memory, system bus and so on, but because it is specially customized for specific network applications, there are great differences between servers and microcomputers in terms of processing power, stability, reliability, security, scalability, manageability and so on. The server mainly includes network server (DNS, DHCP), print server, terminal server, disk server, mail server, file server and so on.

Industrial control computer

Industrial control computer is a kind of computer system which adopts bus structure to detect and control the production process and its mechanical and electrical equipment and process equipment, which is referred to as control machine. It consists of two parts: computer and process input / output (ICPO). The computer is composed of mainframe, input / output device, external disk drive, tape drive and so on. A part of the process input / output channel is added outside the computer to send the detection data of the industrial production process to the computer for processing; on the other hand, the command and information of the computer to control the production process are converted into the control variable signals of the industrial control object, and then sent to the controller of the industrial control object. The operation control of the production equipment is exercised by the controller.

Personal computer

① desktop computer: desktop computer is a very widely used microcomputer, also known as desktop computer, is an independent computer, the volume is relatively large, mainframe, display and other devices are generally relatively independent, need to be placed on the computer desk or special workbench, so it is named desktop. The desktop chassis has large space, good ventilation and good heat dissipation; the independent chassis is convenient for users to upgrade hardware, such as optical drive and hard disk; the opening key, restart key, USB and audio interface of desktop chassis are all in the front panel of the chassis, which is convenient for users to use.

② all-in-one computer: an all-in-one computer is a computer composed of a monitor, a keyboard and a mouse. Its chip, motherboard and monitor are integrated together, and the monitor is a computer, so as long as the keyboard and mouse are connected to the monitor, the machine can be used. With the development of wireless technology, the keyboard, mouse and monitor of the all-in-one computer can be connected wirelessly, and the machine has only one power cord, which has largely solved the problem of too many and miscellaneous cables for desktops.

③ notebook computer: notebook computer is a small, portable personal computer, usually of 1-3kg quality. It is similar to the desktop architecture, but it is more portable. In addition to the keyboard, notebook computers also provide touch pad (TouchPad) or touch point (Pointing Stick), providing better positioning and input functions.

④ handheld (PDA): PDA (Personal Digital Assistant), which means personal digital assistant. As the name implies, it is a digital tool to assist personal work, mainly providing notes, address book, business card exchange and itinerary functions. It can help people work, study, play and so on on the move. Classified by use, it is divided into industrial grade PDA and consumer goods PDA. Industrial PDA is mainly used in the industrial field, common bar code scanners, RFID readers, POS machines and so on; consumer PDA includes more, such as smart phones, handheld game consoles and so on.

⑤ tablet computer: tablet computer, also known as Tablet Personal Computer (Tablet Pc, Flat Pc, Tablet, Slates), is a small, portable personal computer with a touch screen as the basic input device. It has a touch screen (also known as digital board technology) that allows users to work with a stylus or digital pen instead of a traditional keyboard or mouse. Users can input through built-in handwriting recognition, a soft keyboard on the screen, speech recognition, or a real keyboard (if the model is equipped).

Embedded computer

Embedded computer, that is, embedded system, is a kind of special computer system which takes application as the center, is based on microprocessor, and its software and hardware can be tailored to meet the comprehensive strict requirements of application system, such as function, reliability, cost, volume, power consumption and so on. It generally consists of four parts: embedded microprocessor, peripheral hardware, embedded operating system and user's application program. It is the fastest growing field in the computer market, and it is also a computer system with a wide variety of types and forms. Embedded systems include almost all electrical equipment in life, such as calculators, TV set-top boxes, mobile phones, digital TVs, multimedia players, cars, microwave ovens, digital cameras, home automation systems, elevators, air conditioners, security systems, vending machines, consumer electronic equipment, industrial automation instruments and medical instruments, etc.

The above is all the contents of the article "what is a PC?" Thank you for your reading! Hope to share the content to help you, more related knowledge, welcome to follow the industry information channel!

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