What are not computer output devices are keyboards, mice, scanners, barcode input devices, light pens, and touch screens. These are commonly used input devices; while common output devices include monitors, printers, and plotters; input and output devices are One of the key external devices of the data processing system, it can be used interactively with the computer body.
#Environment of this article: Windows 7 system, Dell G3 computer.
What is not a computer output device is the keyboard.
Commonly used output devices include monitors, printers, and plotters; commonly used input devices include keyboards, mice, scanners, barcode input devices, light pens, and touch screens.
Related introduction:
Input device
Input device is a device that inputs data and information to the computer, and is used by the computer to communicate with the user or other devices Bridge is one of the main devices for information exchange between users and computer systems. The task of the input device is to transmit data, instructions and certain sign information to the computer. Keyboards, mice, cameras, scanners, light pens, handwriting input tablets, joysticks, voice input devices, etc. are all input devices (Input Device). They are a device for humans or external devices to interact with computers. They are used to convert raw data to Programs that process this data are fed into the computer.
Computers can receive a variety of data, which can be numerical data or various non-numeric data, such as graphics, images, sounds, etc., through different types of input devices Input into the computer for storage, processing and output. Computer [1] Input devices can be divided into the following categories according to their functions:
● Character input devices: keyboard;
● Optical reading devices: optical mark readers, optical character readers;
● Graphic input device: mouse, joystick, light pen;
● Image input device: digital camera, scanner, fax machine;
● Analog input device: Language analog-to-digital conversion recognition system.
(such as photoelectric paper tape input device, card input device, optical character reader, tape input equipment, Chinese character input equipment, mouse, etc.) sends data, programs and control information into the computer.
Output device
The output device (Output Device) is to convert the results or intermediate results of calculation or processing into various forms that humans can recognize, such as numbers, symbols, Letters, etc. are represented, so the input and output devices play the role of communication between humans and machines. Common ones include monitors, printers, plotters, image output systems, voice output systems, magnetic recording equipment, etc.
The monitor is an indispensable graphics and text output device for the computer. Its function is to convert digital signals into light signals so that text and graphics can be displayed on the screen; the printer is also a computer on the PC. A primary output device that prints programs, data, and character graphics on paper.
Console typewriters, light pens, monitors, etc. can be used as both input and output devices.
Input and output devices (I/O) play a role in connecting people and computers, equipment and computers, and computers and computers.
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