COMPUTER FUNDAMENTALS

Detailed explanation-1: -(Control Unit) is the process of obtaining a program instruction or data item from memory. (Control Unit) is the process of writing results to memory.

Detailed explanation-2: -A processor (CPU) is the logic circuitry that responds to and processes the basic instructions that drive a computer.

Detailed explanation-3: -The actual mathematical operation for each instruction is performed by a combinational logic circuit within the CPU’s processor known as the arithmetic–logic unit or ALU. In general, a CPU executes an instruction by fetching it from memory, using its ALU to perform an operation, and then storing the result to memory.

Detailed explanation-4: -The computer’s central processing unit (CPU) is the portion of a computer that retrieves and executes instructions. The CPU is essentially the brain of a CAD system. It consists of an arithmetic and logic unit (ALU), a control unit, and various registers. The CPU is often simply referred to as the processor.