In 1944 scientist Howard A. Aiken, with the help of IBM Corporation for the first time developed completely automated electric computer.
It is popularly known as Electronic Mechanical Computer (Mark-1).
Features of Mark-1
The size of the computer was big and for controlling these computer 3000 electric switches required.
In this machine data and program can be stored and for this reason it was called digital computer.
Drawback of Mark-1
Mark-1 was slow in speed