William Shockley
Lovelace
Leibnitz
Meghnath shah
First
Second
Third
Fourth
Limited capabilities
Difficulty in operating
Inaccurate results
Poor reliability
Microsoft corporation
IBM
Compaq corporation
Tandy Svenson
First generation computers
Second generation computers
Third generation computers
Fourth generation computers
USSR
USA
UK
Japan
Remington Rand corporation
English Electric Computer Ltd.
Sperry Univac
International Business Machines
4 bit machines
8 bit machines
16 bit machines
32 bit machines
Calculator
Abacus
Analytical Engine
All of these
Jacquard
Babbage
Hollerith
Pascal