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1st evolution
1939-1954 screens where created John V. designed the first digital electronic computer (http://www.aes.org/aeshc/docs/recording.technology.history/computer1.html#gp04) -
2nd evolution
1954 -1959 added a transistor Tom Watson, Jr., led IBM to introduce the model 604 computer, its first with transistors, that became the basis of the model 608 of 1957, -
3rd evolution
1959 -1971 first integrated circuit DEC introduced the first "mini-computer" -
4th evoultion
1971-1981 added the microprocessor , and a mouse and in 1977 jobs introduces Apple II. -
5th evoultion
1991-1996 the first web browser released in January 23, 1993 and display graphics -
6th evoultion (http://www.apple.com/)
In 1998 the Mac was introduced for all to use and that was the start of Apple -
7th and most recent evouliton (http://www.apple.com/)
The new iMac released in 2016 has 4k video and a 27 inch screen as they get newer the start to get thinner