Computer is a modern electronic machine that

Is used to solve different kind of problem computer can be divided in to three categories

Analog computer(2o)Digital computer (3)Hybrid computer

Analog computer

The word ‘’analog ‘’means continuously varying in quantity it is fast as compare to digital computer the memory of this computer is limited

The word ‘’digital’’means discrete it refer to system.which consists of only two digits  0 and 1.digital computer is use in every field of life in home ,hospital and every where

Hybrid computer is new and modern computer  it is also a called super computer it  is most fast and powerful and it is very costly it use to process large amount of data it consumes more electric power  the cost of super computer is  up to several million doller super computer is use for mainly these purposes

Weather forecasting

Nuclear energy

Aircraft design

Online banking