About keyboard:-

 Data:-The raw facts and figures which are going to be procesed on system are called Data.The Data can be anything and it may not have any meaning also.                                 Input:-The Data and instructions that we give to the system ,is called Input.                      Process:-Performing mathematical or logical operation on data is called process.                   Output:-The result of data processing that we get from computer system is called output.                                                                        Information:- A Complete processed form of output that represent a proper and complete meaning is termed as Information.                    Command :-Any  instruction for computer  is called command.                                                    Syntax:-A proper writing a cell of any instruction is equal syntax.                                  Program:-A set of predefined instruction which are written in some logical order to produce desired output is equal program.      Bug:- Any period of a diagram is called bug.    Debug:- A process of finding errors of a program in removal of such is called debug.