Structure & Function of the Processor (OCR A-Level Computer Science): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
What types of operations does the ALU perform?
What types of operations does the ALU perform?
Arithmetic and logic operations
In which phase of the fetch-decode-execute cycle is the ALU involved?
In which phase of the fetch-decode-execute cycle is the ALU involved?
Execute phase
What is the primary role of the Control Unit?
What is the primary role of the Control Unit?
Directs & coordinates CPU activities
What does the Program Counter hold?
What does the Program Counter hold?
Memory address of next instruction
What is the purpose of the Accumulator?
What is the purpose of the Accumulator?
Stores data being processed by ALU
What does the Memory Address Register hold?
What does the Memory Address Register hold?
Memory address of data/instruction
What is the key difference between MAR and MDR?
What is the key difference between MAR and MDR?
MAR holds addresses, MDR holds data
What does the Current Instruction Register hold?
What does the Current Instruction Register hold?
Current instruction being executed
Which characteristic describes the data bus?
Which characteristic describes the data bus?
Bidirectional data flow
What does the address bus carry and in which direction?
What does the address bus carry and in which direction?
Addresses from CPU to memory
What is the primary function of the control bus?
What is the primary function of the control bus?
Carries control signals from CU
Which component performs calculations in the CPU?
Which component performs calculations in the CPU?
ALU