The technological "brains" inside a computer that enables it to rapidly process data has quickly evolved over the years: From using electro-mechanical relays & vacuum tubes in the 1940's, transistors in the 1950's, Micromodules, Hybrid Integrated Circuits & Solid Logic Technology in the 1960's, integrated circuits in the 1970's, to Very Large Scale Integrated circuits (VLSI) used from the 1980's until today.
The Evolution of Computer Logic Technology
1940s 1950s 1960s 1970s
Other Computer Related Technologies
AMS AMD Amdahl Analog Devices Apple Atari ATI AT&T Bell Labs
Burroughs Canon Control Data Cray Cyrix Data General DEC Destron Fearing
ESI Fujitsu GE GM GTE Hitachi Honeywell HP Hughes IBM Intel
Interdesign ITT LSI Memorex Micron Microvision MIT Mitsubishi Motorola
NAPA ECHLIN National Semi NCR NEC MBS NorthStar Computers Nvidia
OKI Electric Panasonic PHILCO Pixim PMI RCA Remington Rand Samsung
SGS-Thomson Signetics Sony Sperry STMicroelectronics Sun Microsystems
Sylvania Tandem Computers Texas Instruments Toshiba Tung-Sol TSMC
UNIVAC Wavesat Western Electric WYSE Etc.