GRADE THREE COMPUTER STUDIES REVISION NOTE

CPU means central processing unit, it is also called processor or micro processor.

Parts of the CPU:   control unit, arithmetic logic unit,  memory unit. RAM is the main memory,  ROM is where files are saved.

Functions of CPU :  It controls the activities of the computer, it process instructions, it communicates with the devices connected to the computer.

Word processing .
To insert document :    click file, click new and click blank document or press ctrl n.   To insert picture or clipart:   position the cursor to insert clipart,  click insert on menu bar, select picture and click clipart,  click ok.

Disk drive :   it's used for storing data, instructions and information for future use.

Function of disk drive : It is used to store information, ,it carries data easily, back up data.

Types of hard disk :  Parallel advanced technology attachment (PATA),  Serial ATA (SATA), Small computer interface  (SCSI),  Solid state drive  (SSD)

How to load Mavis beacon :   On the computer,  select Mavis beacon icon on the desktop,  select typing game.

Special keyboard keys: Tab key, enter key, Capslock, space bar, F1 -  F12, control key, etc

Drawing :
How to draw shapes using paint package. 
Click shape icon on the menu bar, select tool Eg line tool, colour tool, text tool, cure tool, etc. To add colour,  select the shape or object,  add colour.

Word processing setting :it is the way the micro soft environment is arranged or programmed. Eg tittle  bar, menu bar, task bar.