The ENIAC was invented by J. Presper Eckert and John Mauchly at the University of Pennsylvania and began construction in 1943 and was not completed until 1946 .
The computer performed its first calculation on May 6, 1949 and was the computer that ran the first graphical computer game.
MIT introduces the Whirlwind machine March 8, 1955 , a revolutionary computer that was the first digital computer with magnetic core RAM and real-time graphics.
The TX-O (Transistorized Experimental computer) and first transistorized computer is demonstrated at the Massachusetts Institute of Technology in 1956 .
In 1960 Digital Equipment Corporation released its first of many PDP computers the PDP-1 .
Although never sold the first workstation is considered to be the Xerox Alto, introduced in 1974.
The IBM 5100 is the first portable computer, which was released on September 1975. The computer weighed 55 pounds and had a five inch CRT display, tape drive, 1.9MHz PALM processor, and 64KB of RAM.
Steve Wozniak designed the first Apple known as the Apple I computer in 1976 .
The first computer company
The first PC clone was developed by Compaq , the "Compaq Portable" was release in March 1983 and was 100% compatible with IBM computers and software that ran on IBM computers.
In 1992 Tandy Radio Shack becomes one of the first companies to release a computer based on the MPC standard with its introduction of the M2500 XL/2 and M4020 SX computers.