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Step 1 Step 2 Step 3

The three steps in the above example are called IPO (Input-Process-Output).

Similar steps are used to perform most tasks in our day-to-day life.
A computer also works in a stepwise manner.

We provide data and instructions to the computer; this is called Input.

The computer carries out the instructions on the provided data; this is
called Process.

The result we get after the process is complete is called Output.

Knowledge Discovery Subject Enrichment

The output of one process can be used as the input for another process. For

example, making noodles from flour is one example of IPO. The output from this
process, noodles, can be used as input for another IPO of making chowmein.

Let’s understand the IPO with an example.
To add two numbers, the steps we follow are:

Step 1 Input : We enter two numbers as data and the ‘+’ operator as

instruction. For example, ‘3+2’

Step 2 Process : The computer adds the given numbers and calculates the
sum ‘5’.

Step 3 Output : The sum ‘5’ is displayed on the monitor.

5

Step 1 Step 2 Step 3

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