Aprocessor 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?

instruction cycle

Explanation:

The electronic circuitry within a computer that carries out the instructions of a computer program by performing operations specified by the instructions given is called a PROCESSOR or a CENTRAL PROCESSING UNIT(CPU).

A processor FETCHES instructions that is stored in memory that is to say fetch, involves retrieving infomation. After fetching, we have the DECODING, the processor decodes all programs to be executed and EXECUTE this instructions. THIS IS KNOWN AS THE INSTRUCTION CYCLE.