General Knowledge for computer

 science has discovered many wonders and computer. it is ultra modern electronic device for
 stroing and analysing information fed into it. it has no capacity to do anything by itself
 it works on the basis of commands given by the operator.
 computer was not invented over night.it took long time and hard labour to invent computer
 many votaries of science .first of all pascal invented the theory of "digital calculating system"
 in 1642 though his attempts wefw not crowned with success.he initiated the research which hastened/paved
 the way to invention of computer.finally mr.haward akin.an american scienlist invented such
 a machine in 1937 that could do difficalt sums.so the credit for the invention of modern
 compputer goes to.howard akin aftar seven years electric computer used in harvard university
 in 1944 after that many other computer have been invented such as EDSAC in 1945 etc.

 Major componets:-
 a computer consists of five major components 1)input such as keyboard
                                             2)output such as printer 
                                             3)memory such as ram
                                             4)control unit
                                             5)arithmatic
 Note: control unit and arithmatic unit both are in microprocessor