Electronic Computers

The age of electronic computer began after 1890 when vacuum tubes were introduced.Such tubes were thousand of times faster than the earlier electromechanical devices.The first electronic digital computer was developed by John V.Attansoff and his student Clifford Berry.It was called Attansoff Berry(ABC Computer).ABC Computer used vacuum tubes(electronic device) instead of electromechanical relays.It was comparatively very fast as compared to the previous computers.ABC computer could not become popular because it could not solve only certain class of problem and it used advanced electronic technology of that time.