The general model of the computer includes an input device, a processor, a memory, a storage device, an output device, and bus systems. Based on the general model of a computer, we can know the basic components of a computer.
1. General model of computer
(1) Input device
These are devices used for inputting data into a computer, such as a keyboard, mouse, webcam, scanner, and so on.
(2) Processor
It is a data processing device, that manages and controls the computer’s activities, called CPU (Central Processing Unit).
(3) Memory
These are devices that store data temporarily while the computer is running, such as RAM, cache, etc.
(4) Storage device
These are data storage devices for computers, even when the computer is not working such as hard disk drives, USB, etc.
(5) Output device
These are devices that display and output data from machines such as monitors, printers, speakers, projectors, etc.
(6) Bus system
These are communication systems that connect devices and transmit data between them.
2. Basic components in a computer
The computer’s devices are categorized as either internal or external, based on where they are connected.
- Internal devices: mainboard, CPU, Memory (RAM, ROM), HDD, CD-ROM Drive,…
- External devices: Monitor, keyboard, mouse, printer, scanner,…
