A-Level Computer Science - CPU Mock Test: - OCR - MAR, PC , ALU , BUSES , FETCH , REGISTERS , ACC

This is an end of topic test on specific areas of the CPU for students to use. Questions are taken from previous years with the mark scheme attached. There are 4 pages to the test. It includes questions on the following areas of the CPU: -

MAR (Memory Address Register)
PC (Program Counter)
Buses used
ALU (Arithmetic Logic Unit)
Fetch - Decode - Execute Cycle
Registers
Accumulator
Memory Data Register