CSci 105

Introduction to Computers

Lecture 2

© Morris Firebaugh




I. Introduction



II. Conclude Appendix: History and Industry

The Start of the Modern Era - The Late 1930s


III. The Computer Age Begins

Summary of Evolution of Computers by Device

Generations of Computing Elements

0th

1940-46

Electromechanical (Relays and switches)

1st

1946-52

Vacuum Tubes (triodes, pentodes)

2nd

1952-58

Transistors (discrete) invented by J. Bardeen

3rd

1958-64

SSI (Small Scale Integration)

4th

1964-70

MSI (Medium Scale Integration)

5th

1970-76

LSI (Large Scale Integration)

6th

1976-pres

VLSI (i.e., "microprocessors")




IV. Preview of Coming Attractions