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Calculator is used to do mathematical operations.
PowerPoint is used for creating presentations.
Tick ( ) if you know this.
▶ Application software is designed to do a specific type of work.
▶ System software is a set of programs that controls the overall working of a computer.
Hashtag
#Input: The data and instructions given to a computer is called input.
#Output: The result received after processing is called output.
#Booting: Process of starting a computer and making it ready for use.
#Calculate: To find out something by using mathematics.
Imagine you have a magical input device that can take any object from
the real world and put it into your computer. What would you put in and
what would you want the computer to do with it?
REVISIT
▶ To start a computer means to switch it on.
▶ The screen that appears after we switch on the computer is called the desktop.
▶ There are many icons on the desktop.
▶ Shutting down a computer means switching it off.
▶ A computer works in three steps: input, process and output.
▶ Input devices give instructions to the computer.
▶ Processing device works on input.
▶ Output devices show the result of all the work done on the input.
Operating a Computer 31

