Year 9 Theory: Lesson 1 CPU

What is the main function of the CPU in a computer?

• To store data

• To process instructions

• To display graphics

• To execute data

Which component of the CPU is responsible for performing calculations?

• Control Unit

• Arithmetic Logic Unit (ALU)

• Cache Memory

• Register

What does the clock speed of a CPU measure?

• The amount of data it can store

• The number of instructions it can execute per second

• The temperature of the CPU

• The size of the CPU

Which unit is commonly used to measure the clock speed of a CPU?

• Hertz (Hz)

• Metres per second (m/s)

• Celsius (°C)

• Ounces (oz)

What is the primary benefit of having a higher clock speed in a CPU?

• Increased storage capacity

• Faster execution of instructions

• Lower power consumption

• Better graphics performance

What is the purpose of cache memory in a CPU?

• To store long-term data

• To store frequently used data in the CPU

• To manage network connections

• To temporarily store data

How does having multiple cores in a CPU benefit a computer?

• It increases the computer's storage capacity

• It allows the computer to run multiple processes simultaneously

• It reduces the computer's power consumption

• It improves the computer's graphics performance

Which stage of the fetch-decode-execute cycle involves interpreting the instruction?

• Fetch

• Decode

• Execute

• Store

During the fetch stage of the fetch-decode-execute cycle, what does the CPU do?

• It performs arithmetic operations

• It retrieves an instruction from memory

• It decodes the instruction

• It executes the instruction

In the execute stage of the fetch-decode-execute cycle, what does the CPU do?

• It fetches the next instruction

• It decodes the instruction

• It performs the operation specified by the instruction

• It stores the instruction