The device used by the computer to transmit calculation and processing results to the user is called "output device". The output device is the terminal device of the computer hardware system. It is used to receive the output display, printing, sound, and control of peripheral device operations of computer data. It can convert various calculation result data or information processed by the computer in the memory to people or other people. Output in the form accepted by the device, such as numbers, characters, images, sounds, etc.
#The operating environment of this article: Windows 7 system, Dell G3 computer.
The output device (Output Device) is the terminal device of the computer hardware system, used to receive the output display, printing, sound, and control of peripheral device operations of computer data. It also expresses various calculation result data or information in the form of numbers, characters, images, sounds, etc.
The function of the output device is to output the information processed by the computer in the memory in a form that can be accepted by humans or other devices.
The role of output devices
Output devices are the general term for devices that send information from the outside world to the computer and devices that return processing results to the outside world. These returned results may be experienced visually by the user, or as input to other devices controlled by the computer: for a robot, the output of the control computer is basically the robot itself, such as performing various behaviors. .
Types of output devices
There are also many types of output devices. Commonly used output devices in computers include various printers, punched output devices, display devices, plotters, etc. Printers and display devices have become essential equipment for every computer and most terminals.
Paper tape punching output machine Paper tape punching output equipment for computers. Computer output is represented by small holes on punched paper tape. This can not only store the information on the paper tape for a long time, but also use the punched paper tape to input it into the computer.
Card punching output machine Card punching output equipment for computers. Punch cards are easy to read, can be stored for a long time, and can also be used as computer input.
Common output devices
Monitors, printers, plotters, image output systems, voice output systems, magnetic recording equipment, etc.
Display, also known as monitor, is the main tool for realizing human-machine dialogue. It can not only display commands or data entered by the keyboard, but also display the results of computer data processing.
A printer is an output device that prints computer processing results on paper. People often refer to the output of the monitor as soft copy and the output of the printer as hard copy. A device that converts computer output data into printed fonts.
It can be divided into two categories from the perspective of use. One type has keyboard input function, which is slower, but has the ability to communicate with the computer. It is low in price, and in addition to being commonly used in computers and terminals, communication systems also use it as a conventional device. The other type has no keyboard input function. This type of printer can be divided into strip printers, narrow line printers, serial printers, line printers and page printers. According to the physical structure, printers can be divided into two categories: impact type and non-impact type.
The drawing machine is an automated drawing device. Under the control of computer instructions, the computer language is converted into the control signal of the plotter through the control interface, and the rotation of the motor in the X and Y directions and movements such as lifting and lowering the pen are controlled to draw graphics.
In a multi-pen drawing machine, you can choose lines of different colors and thicknesses to draw graphics as needed. In order to reduce the time of using the host, the graphics to be drawn can also be digitized and recorded on tape, and then drawn offline under the control of the tape controller.
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