mechanical and electrical computer

MECHANICAL AND ELECTRICAL COMPUTER

In the begning of 19 century the mechanical calculator was developed to perform all sort of mathematical calculation upto the 1960 it was wiely used later so mechanical calculator was replaced by electric motor

ELECTRONIC-:
    The electronic calculatorwas run with the elctro tube which was quite bulky, later it was replaced with  transistor and as a result the size became small in size
 The modern electronic computer can compute all kinds of mathematical computation and mathematical function. It can also be used to store some data permanently