What are the five major components of a computer?

The five major components of a computer are controller, arithmetic unit, memory, input device and output device; among them, cpu, memory and hard disk are the three core components of the computer; cpu is mainly used to control the system, and memory is used to store To retrieve data, input devices and output devices are collectively called [I/O].

The five major components of a computer include: controller (CU), arithmetic unit (ALU), memory (Memory), input device (Input) and output device (Output).

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The three core components of a computer:

CPU, memory and hard disk.

CU is mainly used to control the system, and the function of ALU is to perform mathematical operations and logical operations;

CPU=ALU CU.

In the organs of the human body, it is similar to the human brain. The memory is equivalent to a person's memory (temporary access), and the hard disk is equivalent to a person's notebook (permanent storage).

Memory is divided into internal memory and external memory.

The advantage of memory is that the access speed is faster than that of hard disk; the disadvantage is that data is easily lost and cannot be saved when power is turned off.

The advantage of an external hard drive is that data will not be lost when power is turned off and can be saved permanently; the disadvantage is that the access speed is slower than that of memory.

Input devices: keyboard, mouse, touch screen

Output devices: monitor, audio, printer

Input devices and output devices are collectively called I/O.

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