A friend of mine appeared in an exam recently, and one of the question asked was regarding CPU Registers, which has two points:
- (a) CPU Registers are part of Primary Memory
- (b) They are volatile
And the choices given were:
- Both (a) and (b) are true
- Only (a) is true
- Only (b) is true
- None of the above
They are volatile. So the second and forth options can be avoided. The confusion was regarding whether it was part of Primary Memory. To my knowledge, CPU Caches, RAMs and ROMs can be called as primary memory. But will CPU registers would be called as part of primary memory? Or will it be considered as Level0 caches?