In digital image processing, a grayscale pixel's brightness level is stored as an 8-bit denary integer ranging from 0 (representing pure black) to 255 (representing pure white).
Convert a pixel brightness level of 173 to its 8-bit binary representation.
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.