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A-level Computer Science > Cpu > Flashcards

Cpu Flashcards

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1
Q

What does CPU stand for?

A

Central Processing Unit

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2
Q

Which component of the computer is considered the ‘brain’?

A

CPU

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3
Q

What is the main function of the CPU?

A

To carry out instructions given by software programs

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4
Q

True or False: The CPU is responsible for executing all calculations and logical operations in a computer system.

A

True

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5
Q

What are the two main components of the CPU?

A

Control Unit and Arithmetic Logic Unit (ALU)

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6
Q

What is the role of the Control Unit in the CPU?

A

To manage the execution of instructions and coordinate the operation of the other components

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7
Q

What is the function of the ALU in the CPU?

A

To perform arithmetic and logical operations on data

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8
Q

Which component of the CPU is responsible for fetching instructions from memory?

A

Control Unit

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9
Q

Which component of the CPU is responsible for executing arithmetic operations?

A

ALU

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10
Q

What is the clock speed of a CPU measured in?

A

Hertz (Hz)

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11
Q

What does the clock speed of a CPU indicate?

A

The number of cycles per second that the CPU can execute

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12
Q

True or False: A higher clock speed always results in better performance.

A

False

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13
Q

What is the purpose of CPU cache?

A

To store frequently accessed instructions and data for quick access

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14
Q

What are the three levels of CPU cache commonly found in modern processors?

A

L1, L2, and L3 cache

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15
Q

Which level of CPU cache is the fastest but also the smallest in size?

A

L1 cache

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16
Q

What is the purpose of the CPU register?

A

To store data temporarily during processing

17
Q

How many registers are typically found in a CPU?

A

Several to dozens, depending on the processor architecture

18
Q

What is the role of the instruction register in the CPU?

A

To hold the current instruction being executed

19
Q

What is the purpose of the program counter in the CPU?

A

To keep track of the memory address of the next instruction to be fetched

20
Q

Which component of the CPU is responsible for decoding instructions into signals for other components?

A

Control Unit

21
Q

What is the role of the fetch-decode-execute cycle in the CPU?

A

To fetch instructions from memory, decode them, and then execute them

22
Q

What is the purpose of the CPU fan?

A

To cool down the CPU to prevent overheating

23
Q

What is thermal throttling in relation to the CPU?

A

A mechanism that reduces the CPU’s clock speed to prevent overheating

24
Q

Which technology allows a CPU to execute multiple threads simultaneously?

A

Hyper-Threading

25
Q

What is the purpose of the CPU socket on a motherboard?

A

To connect the CPU to the motherboard and provide power and communication

A-level Computer Science (2 decks)

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