An industrial robotic arm has 11 distinct operational states (including Idle, Calibrating, Welding, and Emergency Stop). The control system allocates a 3-bit register to store the current operational state of the arm.
Explain one reason why the operational state of the robotic arm cannot be fully represented using this 3-bit 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.