Arithmetic Logic Unit (ALU)
ALU perform two types of operations - arithmetic and logical. Arithmetic operations include addition, subtraction,multiplication and division. Logical operations consist of comparing one data item to another to determine if the first data item is greater then, equal to or less then the other. ALU is responsible for decision making.
Control Unit (CU)
The control unit tells the rest of the computer system how to carry out a program's instruction. It directs the movement of electronic signals between memory and the ALU. It also directs these control signals between the CPU and the input/output devices. It works like a traffic policeman in the system. It controls and initiates coordination between components of the computer.
0 Comments