Main components of a Computer 2

Output Devices
The devices used to get the computer processed data and information out are considered here. Many devices can be used here too and given in Figure  are someof them.

Central Processing Unit (CPU)

The Central Processing Unit is called the brain of the computer. This consists of three parts:
1. Control Unit (CU)
2. Arithmetic and Logic Unit (ALU)
3. Memory Registers  

Control Unit (CU)
All the controlling of the computer is done by this unit. This controls all the devices of the computer giving the required commands when necessary.

Arithmetic and Logic Unit (ALU)
This unit performs all kinds of arithmetic calculations and logical operations.

Memory Registers
The Memory registers are included in the processing unit and it stores the data which are ready to be sent to the Central Processing Unit for calculations or processing.