free hit counter

Instruction Cycle

Date: 7 Apr 2013

Instruction cycle is the basic operation regulated by control unit. It consists of sequential fetching and execution of instruction. The fetch state transports an instruction from memory into the microprocessor. The execute state executes instruction. These two stages are repeated sequentially until the microprocessor executes a halt instruction.

  1. One Comments to “Instruction Cycle”

    1. [...] The control unit controls and synchronizes all the data transfer in microprocessor system. The control unit uses inputs from a master clock to drive timing and control signals that regulate the data transfer in the system associated with each instruction. It also accepts the control signals generated by other devices in the microprocessor system which alters the state of the microprocessor. Control unit regulate the instruction cycle. [...]