Components of the processor

OCR’s GCSE (9–1) in Computer Science (J276) 1.1 Systems architecture first quiz here, i don't know wtf i'm doing, so sorry if bad quality.
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Last updated: January 14, 2020
First submittedJanuary 13, 2020
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Processor component
Function
Control Unit (CU)
Coordinates all the activities taking place inside the CPU.
Arithmetic Logic Unit (ALU)
Carries out logical, shift and arithmetic operations.
Memory Address Register (MAR)
Stores the address of the instruction/data
Memory Data Register (MDR)
Stores the actual instruction or data
Processor component
Function
Program Counter (PC)
Holds the address of the next instruction to be executed.
Current Instruction Register (CIR)
Holds the current instruction to be executed
Accumulator (ACC)
Temporarily stores arithmetic and logic results
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