The fetch-decode-execute cycle (Edexcel GCSE Computer Science): Quizzes
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Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
What is the fetch-decode-execute cycle?
What is the fetch-decode-execute cycle?
The process CPUs use to run programs
How many main stages are in the fetch-decode-execute cycle?
How many main stages are in the fetch-decode-execute cycle?
Three
What is the correct order of stages in the cycle?
What is the correct order of stages in the cycle?
Fetch, decode, execute
What happens after the execute stage completes?
What happens after the execute stage completes?
The cycle starts all over again
What is the main purpose of the fetch stage?
What is the main purpose of the fetch stage?
Get the next instruction from memory
Which bus carries the instruction back to the CPU during fetch?
Which bus carries the instruction back to the CPU during fetch?
Data bus
Where is the fetched instruction stored in the CPU?
Where is the fetched instruction stored in the CPU?
In a register
What does the control unit do during the decode stage?
What does the control unit do during the decode stage?
Looks up instruction in instruction set
What is the CPU's instruction set?
What is the CPU's instruction set?
Dictionary of operations CPU can do
Which CPU component performs mathematical calculations during execute?
Which CPU component performs mathematical calculations during execute?
ALU
How many cycles can modern processors complete per second?
How many cycles can modern processors complete per second?
Billions
Which component sends the read signal during the fetch stage?
Which component sends the read signal during the fetch stage?
Control unit