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Invention of the first computer
In 1822, a man named Charles Babbage invented the first mechanical computer -
Development of the code-breaking machine colossus
In 1943, Alan Turing, known as the code breaker and computer pioneer, developed the code-breaking machine known as Colossus -
Creation of OXO for EDSAC
Alexander Douglas, a Cambridge University PhD candidate, created one of the earliest computer games, known as OXO, a version of tic tac toe -
Invention of the first mouse
Douglas Engelbart invents the first mouse, he called it the mouse because the tail came out the end -
Creation of the program Eliza
Joseph Weizenbaum creates Eliza, a program that makes computers act like psychotherapists -
Development of the first supercomputer
Seymour Cray develops the CDC 7600 -
Invention of the first portable computer
Altair creates the first portable computer -
Development of new PC software
Bill Gates is hired by IBM to develop new software for the PC -
Introduction of Microsoft Works
Microsoft creates and introduces Microsoft Works -
Windows 3.1
Microsoft creates and introduces Windows 3.1 -
Creation of YAHOO
Yahoo is created -
Introduction of Java
Java is created and introduced in 1995 -
Death of Mosiac
The development of Mosiac is officially discontinued -
Internet Service Blogger
Pyra Labs launches the Internet service Blogger -
Sources
I couldn't find the exact dates for the events, only the years were listed.
http://www.datesandevents.org/events-timelines/07-computer-history-timeline.htm
http://www.computerhistory.org/timeline/1952/
http://www.computerhope.com/history/1999.htm