A digital network controller assigns a unique 10-bit binary address to each active device on a local network. If 12.5% of the total available binary addresses are reserved for broadcast and diagnostic purposes, determine the maximum number of unique devices that can be actively addressed on this network.
128128128
768768768
896896896
102410241024
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.