GRADE FOUR COMPUTER STUDIES REVISION NOTE

Note: This revision note is an extract of the term’s work. I advise pupils to equally use their notes where necessary based on the area of concentration


Hard ware is the physical device of the computer system we can see and touch.eg. Monitor,
System unit, keyboard, mouse, printer, etc.

System software is an installed program that comes with the computer when the computer is newly bought from the manufacturer. These are programs that operate behind the scenes.
System software is often referred to as the operating system.eg operating system, utility software, language translator, diagnostic routine etc.


Hard copy is the printed document from the computer while software is the unprinted document from the computer.


Language translator is a program that changes the entire set of instructions from high level language to machine
Language.

BIOS: Means input/output system. BIOS holds start up information of the computer system.

DIAGNOSTIC ROUTINE: This is software that starts up when the computer is turned on. It accesses all the hardware connected to the computer and support where necessary.


Operating system is software that controls the overall activity of the computer system.
KEYBOARD SHUTCUT CHECK YOUR NOTE