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GCSE Computer Science · key term
An integer represented without a positive or negative sign; all its bits contribute to a non-negative value.
Used by AQA and Edexcel
Paper 2
Revise: Applications of Binary ShiftsFor unsigned integers—whole numbers with no negative sign—this provides a straightforward way to perform multiplication or division by powers of 2, such as 2, 4, 8 and 16.
Specification 2.1.2, 2.1.3 · Paper 1
An integer representation that stores only zero and positive whole numbers. With 8 bits, its range is 0 to 255.
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An unsigned integer can represent zero and positive whole numbers only. A signed integer can also represent negative whole numbers. The signed representation used here is two’s complement.
A whole number represented without a negative sign. An 8-bit unsigned integer can have a value from 0 to 255.
