Data and Information

Data is a stream of raw facts representing things or events that have happened.

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In ICT, we usually say that data is made up from four basic types.

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The following are the basic data types except:

• Numbers

• Text

• Images

• Videos

Images are stored as numbers representing the loudness at given intervals

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Sounds are stored as numbers representing the amounts of red, green and blue for each pixel

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Numbers – are stored as numbers, obviously!

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Text characters are stored as a code that represents each – e.g. ASCII

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Eight bits together form a byte

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1024 bytes is a megabyte

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1024 megabytes is a kilobyte

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