A digital library system uses integers to record the total number of books borrowed each year. This value can never be negative.
Identify the reason why unsigned integers should be used to store this count rather than signed integers.
Unsigned integers are more accurate
Unsigned integers cannot cause overflow errors
Unsigned integers can represent larger positive values for the same number of bits
Unsigned integers do not require a parity bit
117 exam-style questions on Edexcel GCSE Computer Science Binary, covering Binary representation and number of states, Unsigned and two's complement integers, Converting denary and 8-bit binary, Binary addition and binary shifts, Concept of overflow, and Hexadecimal notation and conversion. Each one has a worked solution and a mark scheme showing where the marks go.