What is the visible and tangible part of the computer called?

The visible and tangible part of the computer is called "hardware". Computer hardware refers to the general term for various physical devices composed of electronic, mechanical and optoelectronic components in a computer system; these physical devices form an organic whole according to the requirements of the system structure and provide a material basis for the operation of computer software. The function of the hardware is to input and store programs and data, and to execute the program to process the data into a usable form.

The operating environment of this tutorial: Windows 7 system, Dell G3 computer.

The visible and tangible part of the computer is called "hardware".

Hardware (English name Hardware) is the abbreviation of computer hardware (termed in mainland China and Hong Kong, and Taiwan is called: hardware). It refers to the electronic, mechanical and optoelectronic components in the computer system. A general term for various physical devices. These physical devices form an organic whole according to the requirements of the system structure and provide a material basis for the operation of computer software.

In short, the function of the hardware is to input and store programs and data, and to execute the program to process the data into a usable form. From the appearance point of view, the microcomputer consists of a main chassis and external devices. The main chassis mainly includes CPU, memory, motherboard, hard disk drive, optical disk drive, various expansion cards, connecting cables, power supply, etc.; external devices include mouse, keyboard, etc.

Basic components of computer hardware

Hardware mainly includes: chassis, motherboard, bus, power supply, hard disk, storage controller, interface card, portable storage device, built-in Memory, input devices, output devices, CPU fans, buzzers, etc.

• Memory:

Memory is one of the important components in the computer. It is a bridge for communication with the CPU. All programs in the computer run in the memory, so the performance of the memory has a great impact on the computer. Memory is also called internal memory. Its function is to temporarily store operation data in the CPU and exchange data with external memories such as hard disks. As long as the computer is running, the CPU will transfer the data that needs to be calculated into the memory for calculation. When the calculation is completed, the CPU will send the results out. The operation of the memory also determines the stable operation of the computer. Memory is composed of memory chips, circuit boards, gold fingers and other parts.

• Hard disk:

The hard disk (English name: Hard Disk Drive, HDD for short, full name Winchester hard drive) is the main storage of the computer A medium consisting of one or more aluminum or glass discs. These discs are covered with ferromagnetic material. The vast majority of hard drives are fixed hard drives, permanently sealed and secured within the hard drive.

Types of hard drives:

Hard drives are divided into solid state drives (SSD) and mechanical hard drives (HDD); SSD uses flash memory particles to store, and HDD uses magnetic discs to store. The following mainly introduces HDD.

• Central Processing Unit:

Central Processing Unit (Central Processing Unit, CPU), composed of arithmetic units and controllers, is the core of any computer system Essential core components. The CPU is composed of arithmetic units and controllers, which are implemented by arithmetic circuits and control circuits respectively.

• Memory:

Memory (Memory) is a memory device in a computer system, used to store programs and data.

All information in the computer, including input raw data, computer programs, intermediate running results and final running results, are stored in the memory. It stores and retrieves information based on locations specified by the controller. Only with memory can the computer have memory function and ensure normal operation.

• Input device:

A device that inputs data and information into the computer. It is a bridge between computers and users or other devices. Input devices are one of the main devices for information exchange between users and computer systems.

• Output device:

The output device (Output Device) is the terminal device of the computer, used to receive the output display, printing, and printing of computer data. sound, control peripheral device operations, etc. It also expresses various calculation result data or information in the form of numbers, characters, images, sounds, etc.

• Graphics card

Graphics card full name is display interface card (Video card, Graphics card), also known as display adapter (Video adapter), monitor configuration The card is simply called a graphics card and is one of the most basic components of a personal computer. The purpose of the graphics card is to convert and drive the display information required by the computer system, provide line scan signals to the display, and control the correct display of the display. It is an important component connecting the display and the personal computer motherboard, and is an important device for "human-computer dialogue" one. As an important part of the computer host, the graphics card is responsible for outputting and displaying graphics. Graphics cards are very important for people who are engaged in professional graphic design. Graphics chip suppliers for civilian graphics cards mainly include AMD (AMD) and Nvidia (NVIDIA).

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