The five main components of a desktop computer are arithmetic unit, controller, storage, input device and output device.
1. Operator or Arithmetical and Logical Unit:
The main function of the operator is to perform various operations on data. In addition to basic arithmetic operations such as addition, subtraction, multiplication, and division, these operations also include logical processing capabilities that can perform "logical judgments", that is, basic logical operations such as "and", "or", and "not" As well as operations such as data comparison and shifting.
2. Controller (Control Unit):
The controller is the control center of the entire computer system. It directs all parts of the computer to work in a coordinated manner to ensure that the computer operates in an orderly manner according to predetermined goals and steps. to operate and process. The controller and arithmetic unit are usually collectively called the Central Processing Unit (CPU).
3. Memory unit:
The main function of the memory is to store programs and various data information, and to complete the program or data at high speed and automatically during the operation of the computer. access. Memory is a device with a "memory" function that uses physical devices with two stable states to store information. These devices are also called memory elements.
4. Input device:
The device used to input various raw data and programs to the computer is called an input device. Input devices convert various forms of information, such as numbers, text, images, etc., into digital "encodings", that is, binary codes (actually electrical signals) represented by 1s and 0s that the computer can recognize, and convert them into "codes". Input" (INPUT) into the computer and store it. The keyboard is a necessary input device, and commonly used input devices include mice, graphics tablets, video cameras, etc.
5. Output device:
The device that outputs various types of data from the computer is called an output device. The output device converts the results of computer processing (still encoded in digital form) into information forms that can be received and recognized by humans or other devices, such as text, numbers, graphics, sounds, voltages, etc. Commonly used output devices include monitors, printers, plotters, etc.
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