Components of Processor: Registers, ALU, Bus Control, Instruction Decoder

From our perspective, the processor is the electronic integrated circuit that controls other elements of the computer. Its main ability is to execute instructions. While we will go into details of the instruction set you will see that some of the instructions perform calculations or process data, but some of them do not. This suggests that the processor is composed of two main units. One of them is responsible for instruction execution while the second performs data processing. The first one is called the control unit or instruction processor, the second one is named the execution unit or data processor. We can see them in Fig