Primary 3 ICT SECOND TERM WEEK 1 What is a Computer
What is a Computer?
A computer is an electronic device that accepts data as input, processes it and brings out information as output.
Basic parts of a computer
Monitor, Keyboard, Mouse, CPU (System Unit), UPS (Uninterrupted Power Supply), USB drive, Speakers, Projector, Printer and scanner.
Classes of Computers [mediator_tech]
Super Computers Mainframe Computer Mini Computer Micro Computer Touch Typing
THE HOMEKEYS: A S D F SPACE BAR, SPACE BAR J K L ;
Types of CPU (Central Processing Unit)
This type of CPU is in a standing position
This type of CPU is usually in a lying down position. Usually placed on the table and the monitor placed on top
Main Units of the CPU (Central Processing Unit)
Vertical CPU (Tower Computer)
Horizontal CPU (Desktop Computer)Control Unit: It controls other units within the CPU. It is the brain within the CPU.
Arithmetic Logic Unit: It is the part of the CPU that performs arithmetic (mathematical) and comparison operations.
Memory Unit: It is used to store data.