COMPUTER

INTRODUCTION

    The computer is an electronic device. The computer plays a dominant role in the lives of people all around the world.  They made a tremendous impact in every fields like science,  medicine,  business,  entertainment,  communication etc.  In a relatively short span of time.  Hence computers are considered  as a premier invention of this century.  Surprisingly this revolutionary invention,  by its very nature, cannot perform a single operation of its own.  It has to be instructed at every step to perform any task.