Hardware composition computer

"Minimum" PC Configuration
System unit
Monitor
Keyboard
Mouse

"Typical PC"
Enclosure with power supply
System (motherboard) board
CPU
RAM
video controller
Monitor
HDD
Keyboard
Mouse
CD-ROM drive
floppy disk drive
Sound card

PC configuration
An office computer is focused on working with office-class programs and does not have high performance.
A home computer is used for entertainment and not too complicated work (educational) tasks. Multimedia.
A gaming computer requires a powerful graphics subsystem.
The design computer is designed to perform complex graphics and video processing.

PC configuration
Laptop - portable PC. In addition to its compact dimensions, it differs from a desktop PC in the ability to run on batteries.
Classified by size, display diagonal and number of "spindles" (individual drives).
Desktop laptop. Unlike laptops in the absence of batteries.
Netbook - a small laptop designed to access the Internet and work with office applications

The main purpose of the computer -
execute programs, each of which is a set of instructions.
Each command is an elementary instruction that instructs the computer to perform a particular operation.
The device that processes information is the processor.

The computer motherboard contains only devices that process information.
Devices that control the monitor, display, etc., are implemented on separate boards (controllers), which are inserted into special connectors on the motherboard - slots.

Input Devices:
Keyboard