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We all know that machines make our work faster and easier. Different types of WORKING OF A COMPUTER
machines are designed to perform different types of tasks. Some machines are used
As we have discussed earlier, a computer can do a lot of things. Let us understand
to do only one type of task. For example:
how a computer works.
A washing machine is used to wash clothes.
A computer works in three steps: Input Process Output (IPO). This is also
A music system is used to play music. called the IPO cycle.
Whereas, a computer is used to do multiple tasks. For example:
Input Process Output
Search information Send emails
Play games Play music INPUT
Store information Solve mathematical problems We enter data and instructions into the computer which is called input. The devices
which are used to send input to a computer are called input devices.
FEATURES OF A COMPUTER PROCESS
A computer works on data (input) to produce meaningful information with the help of
A computer has many unique features that make it a
processing device known as the CPU (Central Processing Unit). This conversion of
wonder machine. Some features are given below: data into information is called processing. CPU is also called the brain of a computer.
Speed: It does calculations at a very high speed.
OUTPUT
The result received after processing is called output. The devices which are used to
display the results are called output devices.
Accuracy: It performs calculations without making
any mistake. However, we can get incorrect output if
inaccurate data is fed into the computer.
Input Device Processing Device Output Device
Versatility: It performs various types of jobs at the PARTS OF A COMPUTER
same time.
The computer system is made up of two parts—Hardware and
Software. Let’s learn about hardware and software in detail.
Memory: It stores huge amounts of data and
information that can be retrieved quickly and easily HARDWARE
when needed.
The term ‘hardware’ refers to the parts of a computer that we can see and touch.
In other words, hardware are the tangible parts of a computer system.
8 Pro (Ver. 5.0)-III

