As we know the central processing unit (CPU) in a computer system uses electronic elements such as switches, etc. which are represented in one of the two states viz, on or off, high or low, etc. These two states are indicated as 1 and 0. If a switch is on, it is said to be in state 1 and if it is off, it is state 0. In other words, a computer oper-
ates with only two digits 0 and 1, called binary digits (or bits). In memory, a bit position is a miniature transistor within an integrated circuit. The data is represented as a string consisting of 0s and 1s. Hence the ordinary decimal system of data representation is not suited to CPU. It works with simple but rather longish binary system.