Computer is an interesting machine. It can do lot of things. From simple calculations to complex medical equipment functionalities ; computers are playing a main part. So it is the invention which really changed the mankind. Actually what is this computer... Is it that much great. In simplest terms computer is "An electronic data processing machine". Means a machine which can process data.
So what is data...??
It can be anything
What is processing
converting those row facts (data) to some meaningful information is called processing....
1 is raw data which don't have a specific meaning but when 1 is represented as roll number of a student then it will become information.