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The FDE Cycle
| Question | Answer |
|---|---|
| What does PC stand for | program counter |
| What does MAR stand for | memory address register |
| What does MDR stand for | memory data register |
| What does CIR stand for | current instruction register |
| What is the MBR - memory buffer register also known as | MDR |
| What is the purpose of the the program counter (PC) | it holds the address of the next instruction to be fetched and executed |
| What is the purpose of the the memory address register (MAR) | it holds the address of the currently addressed memory location |