Von Neumann Architecture Flashcards
1
Q
What does MAR stand for?
A
Memory Address Register
2
Q
What does the MAR do?
A
Holds any memory address about to be used by the CPU.
3
Q
What does MDR stand for?
A
Memory Data Register
4
Q
What does the MDR do?
A
Holds the data or instruction fetched from or waiting to be written to memory.
5
Q
What does PC stand for?
A
Program Counter
6
Q
What does the PC do?
A
Holds the memory address of the instruction for each cycle.
7
Q
What does the accumulator do?
A
Stores the results of the ALU.
8
Q
What does Von Neumann’s architecture describe?
A
A system where the CPU runs programs stored in memory.
