System Architecture

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What is the purpose of the CPU?
The CPU executes instructions, performs calculations and controls the other hardware
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What are the 4 components of Von Neumann architecture?
MAR (Memory Address Register), MDR (Memory Data Register), Program counter and the Accumulator
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What is the purposes of the MAR?
It stores the location of the data that is going to be accessed next
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What is the purpose of the MDR?
It stores the data that has just arrived or is about to be sent off
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What is the purpose of the Program counter?
It contains the location of the next instruction, it is updated with a new location every time
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What is the purpose of the accumulator?
It stores the reults of the calculations performed by the ALU
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What is the puporse of the ALU?
It performs various calculations, either arithmetic functions or logic functions
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Other cards in this set

Card 2

Front

MAR (Memory Address Register), MDR (Memory Data Register), Program counter and the Accumulator

Back

What are the 4 components of Von Neumann architecture?

Card 3

Front

It stores the location of the data that is going to be accessed next

Back

Preview of the back of card 3

Card 4

Front

It stores the data that has just arrived or is about to be sent off

Back

Preview of the back of card 4

Card 5

Front

It contains the location of the next instruction, it is updated with a new location every time

Back

Preview of the back of card 5
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