History of Computers

• Abacus
• Analog Computers
• Napier's Bones
• Pascaline / Pascal's Machine
• Leibniz's Wheel / Step Reckoner
• Jacquard's Loom
• Analytical Engine and Difference Engine

1st Gen - Vacuum Tubes

• ENIAC (Electrical Numerical Integrator and Calculator)
• EDVAC (Electronic Discrete Variable Automatic Computer)
• EDSAC (Electronic Delay Storage Automatic Calculator)

Mass produced

• UNIVAC-1 (Universal Automatic Computer 1)
• IBM 650

2nd Gen - Transistors

• IBM 7094
• IBM 1620
• IBM 1401

3rd Gen - IC Chips

• IBM System/360
• Honeywell 6000
• PDP-8

4th Gen - LSI/VLSI Chips

• Cray-I
• IBM PC
• Macintosh

5th Gen - ULSI Chips and Beyond

• Param 1000
• PDP-11
• VAX series
• Amiga series
• Pentium 4
• Current Computers