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Fist-generation computer
The first generation computers were huge, slow, expensive, and often undependable. -
First-generation computers
Two Americans Presper Eckert and John Mauchly built the ENIAC electronic computer. -
First-generation computers
ENIAC, the prototype first-generation computers, contained about 18,000 tubes, and every tube was replaced atleast once in the first year of operation. -
First-generation computers
The first generation computers were huge, slow, expensive, and often undependable. -
Second-generation computers
First demonstrated by At&T's Bell labratories, transitors regulate current or voltage flow and act as a switch for electronic signals. -
Second-generation computers
One transistor replaced the equivalent of 40 vacuum tubes. -
First-generation computers
They consume a lot of power, much of which is wasted heat. They also tend to burn out quickly. -
First-generation computers
As the computer era dawned, programmers were were forst to think in 1's and 0's to write instructions in machine language. -
Third-generation computers
Jack Kilby at Texas instrumementsand Robert Noyce at Fairchild Semiconductor independently developed integrated circuits. -
Third-generation computers
Two of the first computers to incorparate integrated circuits were the RCA Spetra 70 and the widely successful IBM 360. -
Second-generation computers
By the late 1950's, transitors,had replaced vacuume tubes as the processing and memory technology for most computers. -
Second-generation computers
these computers use transitors instead of instead of vacume tubes. -
Second-generation computers
Computer manufactures such as IBM developed operating systems that provided standardized routines for input,output,memory management,storage and other resouce managemnt activities. -
Second-generation computers
These computers ran programming language compliers that allowed programmers to write instructions using english-like commands rather then machine language. -
Third-generation computers
In 1965, Digital equipment corp. (DEC) introduced the DEC PDP-8, the first comercially successful minicomputer. -
Third-generation computers
Thousands of manufactoring plants,small buisnesses, and scientific laboratorieswere attracted to the speed,small size,and reasonable cost of the PDP-8. -
Third-generation computers
DEC introduced a succession of minicomputers that stole a share of the main frame market. -
Fourth-generation computers
The technology of fourth-generation computers appeared when Ted Hoff developed the first general-purpose microprocessor. -
Fourth-generation computers
Motorola released the 6800 8-bit microprocessor. -
Fourth generation computers
The Altair computer made the cover of popular electronics in January 1975. -
Fourth-generation computers
Steve Jobs and Steve Wozniak founded Apple computercorporation and released the Apple I. -
Fouth-generation computer
Zilog introduced the Z80 microprocessor, an enchanced 8080microprocessor that was used in many early computer systems. -
Fourth-generation computers
IBM began marketing what is called a personal computer or PC. Based on the 8088 processor. -
Fourth-generation computers
Apple introduced a product called Apple Lisa. -
Fourth-generation computers
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.
