What is a computer?

                                             

  Simply, computer is an electronic device which use the input given by the user and manupulate the data according to thye user define and give the output base on the input given by user.
Or, we can define computer as an programmable machine which computes.

    Computer needs different components to compute.
(i.e. hardware, software, firmware, program, command, memory, RAM, ROM, CPU, data, information etc. these are the basic components only. Because computer needs other preipharels too.)

    Computer applications:

Science and technology,

Communication,
Transport,
Education andd research,
Commerce and industries,
Medicine,
Law and orders,
Home and entertainment,
Gaming and simulation,
and so on...