4th Generation Computer (1971-Today) – The Microprocessor

This generation can be characterized by both the jump to monolithic integrated circuits (millions of transistors put onto one integrated circuit chip) and the invention of the microprocessor (a single chip that could do all the processing of a full-scale computer).  By putting millions of transistors onto one single chip more calculation and faster speeds could be reached by computers.  Because electricity travels about a foot in a billionth of a second, the smaller the distance the greater the speed of computers.

However what really triggered the tremendous growth of computers and its significant impact on our lives is the invention of the microprocessor.  Ted Hoff, employed by Intel (Robert Noyce’s new company) invented a chip the size of a pencil eraser that could do all the computing and logic work of a computer.  The microprocessor was made to be used in calculators, not computers.  It led, however, to the invention of personal computers, or microcomputers.

1971_intel4004

Intel 4004

The first advertisement for a microprocessor, the Intel 4004, appeared in Electronic News.  Developed for Busicom, a Japanese calculator maker, the 4004 had 2250 transistors and could perform up to 90,000 operations per second in four-bit chunks.  Federico Faggin led the design and Ted Hoff led the architecture.

It wasn’t until the 1970’s that people began buying computer for personal use.  One of the earliest personal computers was the Altair 8800 computer kit.  In 1975 you could purchase this kit and put it together to make your own personal computer.  In 1977 the Apple II was sold to the public and in1981 IBM entered the PC (personal computer) market.

1979_Ad_400-800

Advertisement for Atari 400 and 800
Both sold well, though they had technical and marketing problems, and faced strong competition from the Apple II, Commodore PET, and TRS-80 computers.

1972_pong

Original Atari Pong Game
Pong is released. In 1966, Ralph Baer designed a ping-pong game for his Odyssey gaming console. Ralph Baer designed a ping-pong game for his Odyssey gaming console. Nolan Bushnell played this game at a Magnavox product show in Burlingame, California.Pong would revolutionize the arcade industry and launch the modern video game era.

Today we have all heard of Intel and its Pentium® Processors and now we know how it all got started.  The computers of the next generation will have millions upon millions of transistors on one chip and will perform over a billion calculations in a single second.  There is no end in sight for the computer movement

Leave a comment