CPU Components & Their Function (OCR GCSE 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 is the CPU often referred to as in a computer system?
What is the CPU often referred to as in a computer system?
The brain of the computer
Which CPU component performs arithmetic operations such as addition and subtraction?
Which CPU component performs arithmetic operations such as addition and subtraction?
ALU
Which types of operations does the ALU perform?
Which types of operations does the ALU perform?
Arithmetic and logical operations
What does the Control Unit manage within the CPU?
What does the Control Unit manage within the CPU?
Control signals directing operations
What does the Control Unit do during the fetch-execute cycle?
What does the Control Unit do during the fetch-execute cycle?
Decodes the fetched instruction
What type of memory is cache described as?
What type of memory is cache described as?
High-speed memory within the CPU
What does cache store to improve CPU performance?
What does cache store to improve CPU performance?
Frequently used instructions and data
When is cache checked during the fetch-execute cycle?
When is cache checked during the fetch-execute cycle?
Before fetching data from main memory
What does the Program Counter (PC) store?
What does the Program Counter (PC) store?
Address of the next instruction
What does the Memory Address Register (MAR) store?
What does the Memory Address Register (MAR) store?
Address of data/instruction in memory
What does the Memory Data Register (MDR) store?
What does the Memory Data Register (MDR) store?
Data fetched from or written to memory
What does the Accumulator (ACC) store?
What does the Accumulator (ACC) store?
Intermediate results from ALU operations