The central processing unit (CPU) (Edexcel GCSE Computer Science): Quizzes
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Practise the questions
13 questions from this quiz
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Practise the questions
13 questions from this quiz
What is the CPU commonly known as?
What is the CPU commonly known as?
The brain of any computer system
What is the first step in the CPU's continuous cycle?
What is the first step in the CPU's continuous cycle?
Fetches instructions from memory
Which three components must work together for the CPU to function effectively?
Which three components must work together for the CPU to function effectively?
Control unit, ALU, and registers
What is the main job of the control unit?
What is the main job of the control unit?
Fetch and decode program instructions
Which component performs all mathematical and logical operations?
Which component performs all mathematical and logical operations?
Arithmetic Logic Unit (ALU)
What is the key advantage of registers?
What is the key advantage of registers?
Extremely fast storage in the CPU
What does the CPU clock synchronize?
What does the CPU clock synchronize?
All the CPU's operations
What unit is used to measure clock speed?
What unit is used to measure clock speed?
Hertz (Hz)
What speed do most current CPUs operate at?
What speed do most current CPUs operate at?
Around 3 GHz
What are buses in computing?
What are buses in computing?
Collections of wires
Which bus transfers actual program instructions and data?
Which bus transfers actual program instructions and data?
Data bus
How many addresses can a 32-bit address bus access?
How many addresses can a 32-bit address bus access?
addresses
Which bus must be bidirectional?
Which bus must be bidirectional?
Data bus