Question

Answer in about one paragraph.

A processor has many different sequential and combinational logic units. Somehow, the inputs for each of those units must be asserted in order to correctly execute an instruction. How does the processor determine those control signals?

Answer 1

The brain of the processor is the control unit.Control units sends the control signals to other parts of the processor instructing what to do.It has 2 main components decoder and clock.Decoder is the component which decodes the binary instructions and determine what actions are to be done next.Control unit sends instructions according to this to the registers, memory and ALU.Clock ensures that all instructions are carried out at the right time.Pulses are sent to the different parts of the CPU in accordance to the clock or timer.The instruction register holds the current instruction that is the to be executed.Program counter holds the memeory address of the current instruction.Using all these and other registers and buses (data and address) processor operates.

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