A digital-to-analog converter in a high-fidelity audio system uses an 11-bit register to represent discrete voltage levels. Determine the number of unique voltage levels that can be represented by this register.
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.