VON NEUMANN Flashcards
1
Q
What does the PC do?
A
the program counter stores the address of the next instruction to be read.
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.
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.
4
Q
What does the CIR do?
A
The current instructions register stores the current instructions while it is being decoded and executed.
5
Q
When do interrupts happen?
A
After the FDE cycle, a check for interrupts are made.
6
Q
A
