1. Introduction of Computer
Computer is an electronic device, which is used for varied applications ranging from performing complex calculations, writing simple letters, developing multimedia applications, financial accounting & banking applications, booking of Airlines/Railways tickets and scores of many other fields.
A Computer has many components like Keyboard, Mouse, Monitor, Memory, Printer and most important the Central Processing Unit which serves as the brain of the computer system on the whole.
Computers work when Instructions in a particular language are given to it to perform a task.
A program comprises of many such instructions clubbed together.
Hardware refers to the Physical Components of the Computer that you can see and touch like Keyboard, Mouse, Printer, Hard disk and so on.
Software consists of Instructions, Programs, Operating Systems which are required to run the necessary pieces of hardware together. Without software, the hardware is of no use.