CPU

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  • Created by: almalol
  • Created on: 12-03-16 15:16
What is the CPU made of?
The Arithmetic Logic Unit (ALU), The control unit or Controller, Registers, and some internal memory
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What does the CPU do?
The PC component that does calculations and fetches/executes instructions.
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What is the ALU, and what does it do
Arithmetic Logic Unit. Carries out calculations and similar numeric functions
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What does the Control unit in a CPU do
It retrieves data and instructions from the correct location in the memory and then executes those instructions.
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What do the Registers in a CPU do
They store very small pieces of info. such as: Memory location of next piece of data needed, or the intermediate result of a calculation, or the current instruction being executed
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What is the behavior cycles of the CPU?
Fetch-Decode-Execute Cycle.
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What is the Clock speed and what is it measured in?
It measures the amount of operations the CPU can do- 1 Hz = 1 operation per second, 1 MHz = 1 million operations per second, and 1 GHz = 1 billion operations per second.
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What else can influence the the speed of a CPU?
Other than Clock speed: Speed of other components, Size of cache, Number of cores
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What is the cache and how does the size affect its speed?
Cache memory is high-speed memory that stores frequently needed instructions/data. The larger the cache = the more it can store = the faster the CPU appears to work as it's not waiting so long to receive data/instructions
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How does the number of cores affect the CPU?
You should know that a dual-core or quad-core processor is not going to operate 2 or 4 times faster than a single-core processor- Instructions need to be executed in order
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Other cards in this set

Card 2

Front

What does the CPU do?

Back

The PC component that does calculations and fetches/executes instructions.

Card 3

Front

What is the ALU, and what does it do

Back

Preview of the front of card 3

Card 4

Front

What does the Control unit in a CPU do

Back

Preview of the front of card 4

Card 5

Front

What do the Registers in a CPU do

Back

Preview of the front of card 5
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