VON NEUMANN Flashcards

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1
Q

What does the PC do?

A

the program counter stores the address of the next instruction to be read.

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2
Q

What does the MAR do?

A

Memory address register stores th address of the memory location which is about to have a value read from or written to it.

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3
Q

What does the MDR do?

A

The memory data register stores the data that has just been read from memory or just about to be written to memory.

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4
Q

What does the CIR do?

A

The current instructions register stores the current instructions while it is being decoded and executed.

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5
Q

When do interrupts happen?

A

After the FDE cycle, a check for interrupts are made.

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6
Q
A
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