Page 17 - Viva ICSE Computer Studies 2 : E-book

A pencil is taken. It is sharpened using a The pencil gets sharpened

Here, the pencil is sharpener. and its shavings are left.
input. Here, the sharpener is Here, the sharpened pencil
the processing device. and the pencil shavings are
the outputs.

Learn More

The IPO cycle is also known as the IPO+S model in which S stands for storage since
a computer stores the output for future use.

To understand the working of a computer, let’s study some more examples.

Example 1

When we water a plant, the

plant takes in water. It feeds its
roots, leaves and branches with

water. As a result, f lowers come
out. Here, water is the input,

taking in water is processing
and f lowers are the output.

Example 2
Think and Discuss
When we add any given numbers, the numbers
are the inputs, our brain that does the processing Do we follow the IPO cycle

work of addition is the processor, and the sum while using a CD to watch a
cartoon on a computer?
we get is the output.

Similarly, the numbers, letters and symbols that we type are the inputs for a

computer. The CPU works on them. This is processing. The typed text that we
see on the monitor is the output.

So, a computer also uses the IPO cycle to perform a task.

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