Computer hardware mainly includes central processing unit, storage, output device and what

Computer hardware mainly includes central processing unit, storage, output devices and input devices; input devices refer to devices that convert various forms of information into information suitable for computer processing and send them to the computer. Input devices Devices are divided into media input devices and interactive input devices. Typical input devices are keyboard and mouse.

The operating environment of this tutorial: Windows 10 system, DELL G3 computer.

The hardware of the computer mainly includes the central processing unit, storage, output device and what

The hardware of the computer mainly includes the central processing unit, the storage output device and the input device

The keyboard and mouse are typical input devices, and the monitor is the output device.

Introduction to input devices

Computer input devices are devices that convert various forms of information into information suitable for computer processing and send them to the computer

Input devices are divided into media input devices and interactive input devices. Devices that use media input include paper tape input machines, card input machines, scanners, optical character readers (OCR), optical mark readers (OMR), IC card readers, magnetic card readers, barcode readers, tape drives, Floppy disk drives, optical disk drives, etc.

These devices feed information recorded on various media (such as punched tape, punched cards, paper, magnetic tape, floppy disks, optical disks) into the computer. Interactive input devices include keyboards, light pens, mice, touch screens, trackballs, joysticks, etc.

Using the method of mutual dialogue between the user and the computer for input, the input content and the computer's response can be seen on the monitor screen. Since the 1990s, handwritten Chinese character recognition equipment and handwritten Chinese character input equipment have become practical, research on speech input equipment has also reached a certain level, and digital cameras as image input devices have also begun to become popular. Keyboard An input device consisting of keys.

Expand knowledge

Computer, commonly known as computer, is a modern electronic computing machine used for high-speed calculations. It can perform numerical calculations and logical calculations. It also has Storage memory function. It is a modern intelligent electronic device that can run according to the program and process massive data automatically and at high speed. It is composed of a hardware system and a software system. A computer without any software installed is called a bare metal computer. It can be divided into five categories: supercomputer, industrial control computer, network computer, personal computer, and embedded computer. The more advanced computers include biological computers, photon computers, quantum computers, etc.

Disk is the main storage medium of computer. It can store a large amount of binary data and can maintain data loss even after power failure. The disk used in early computers was a floppy disk (Floppy Disk, referred to as floppy disk), and the disk commonly used today is a hard disk (Hard disk, referred to as hard disk).

CPU:

Also known as the central processing unit, it is the core component of the entire computer. When executing all instructions such as data operations and transmission, it is necessary to follow the instructions The central processing unit (CPU) is the core of the entire computer and controls all information processing processes of the computer.

Input and output devices:

In computer hardware, input and output devices are an important part. Input devices literally input information and data into the computer. Devices, such as keyboards, cameras, mice, and microphones, etc., all belong to the category of input devices;

Output devices are hardware devices that display and output information and data, and printers and monitors are output devices, mainly It is a device designed to display display data to people. But in some cases, the entire computer can be used as an output device. When the computer is connected to the network, the entire computer becomes the output device of the network.

Storage device:

As the name suggests, the storage device is a hardware device that stores information. It is an important warehouse in the entire computer, storing all input and The data obtained by the operation can not only save the data and extent, but also extract and output the data according to the instructions of the central processor. The storage device that exists inside the computer is called internal memory, and the device that is externally linked is called external memory.

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