What is the purpose of registers in microprocessor

[soft land]

what is the purpose of registers in microprocessor ?

 

[berkeman]

what is the purpose of registers in microprocessor ?

What would be your thoughts? Do some reading at this web page, and let us know what you've learned:

http://en.wikipedia.org/wiki/Microprocessor

 

[MIC]

When you give certain commands to the processor the bits currently on the register will undergo logical operations, or be moved to a bus/device.

 

[Phrak]

When you give certain commands to the processor the bits currently on the register will undergo logical operations, or be moved to a bus/device.

well, the same could be said of external memory, other external devices, temporary registers, and the like.

 

[Ouabache]

berkeman is trying to help you learn. If you were not inspired by the reference he gave you, here is another microprocessor reference. We'd like to hear your thoughts after reading this material.

 

[MIC]

well, the same could be said of external memory, other external devices, temporary registers, and the like.

then why do you have to explicitly read from or write to external memory using the registers, while information on the registers can directly be manipulated with the ALU

 

[Phrak]

then why do you have to explicitly read from or write to external memory using the registers, while information on the registers can directly be manipulated with the ALU

Now, I think you've answered the OPs question at the programming level.