Computer Generations
- 0 - Electro-mechanical (1920's - 50's)
- 1 - Vacuum tube (1940's - 60's)
- 2 - Transistor (1960's - early 70's)
then more of the same
- 3 - Integrated circuit (Late 60's - 70's)
- 4 - VLSI microprocessor (Mid 70's ...)
- 5? - Parallel processors (Early 80's ...)