But inside the computer, the steps followed are quite complex than what we actually see on the monitor or screen. In computer's memory both programs and data are stored in the binary form. You have already been introduced with decimal number system, that is the numbers 1 to 9 and 0. The binary system has only two values 0 and 1. These are called bits. As human beings, we all understand deci- mal system but the computer can only understand binary system. It is because a large number of integrated circuits inside the com- puter can be considered as switches, which can be made ON or OFF. If a switch is ON it is considered 1 and if it is OFF it is 0. A number of switches in different states will give you a message like this: 110101…10. So the computer takes input in the form of 0 and 1 and gives output in the form 0 and 1 only. Is it not absurd if the computer gives outputs as 0's & 1's only? But you do not have to worry about. Every number in binary system can be converted to decimal system and vice versa; for example, 1010 meaning decimal 10. Therefore it is the computer that takes information or data in decimal form from you, convert it into binary form, process it pro- ducing output in binary form and again convert the output to deci- mal form to make it understandable.