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Representation of data: Units


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Binary
Base 2 numbers. Only digits ‘1’ and ‘0’ are allowed.
Bit
The smallest unit of data – a bit can take the value of ‘0’or ‘1’, alternatively expressed as ‘false’ or ‘true’.
Byte
The smallest addressable unit of data in a computer. Usually 8 bits.
Gigabyte (GB)
1024 megabytes
Kilobyte (kB)
1024 bytes
Megabyte (MB)
1024 kilobytes
Nibble
Half a byte
Terabyte (TB)
1024 gigabytes