Jennings developed MicroChess shortly after leaving graduate school in New York. It was the first software to ever sell over 10,000 copies.[3] The code was sold on paper and users had to manually enter the program using a keyboard.[4]
In 1976, along with Dan Fylstra, Jennings co-founded the corporation Personal Software, which later became VisiCorp. Proceeds from MicroChess sales helped finance the development of VisiCalc, the first-ever spreadsheet program.[9][10][11]
Publications
January 1978: "The Second World Computer Chess Championships". BYTE. p. 108.
March 1978: "Microchess 1.5 vs. Dark Horse". BYTE. p. 166.
1979: "Revolution in Personal Computing". Wharton Magazine.[12]
No date: "A Good, Long Read (for 18 Years)". Foundation RISC User Online. RISCOS Ltd.
^(www.maddogproductions.com/creative), Mad Dog Productions. "IT History Society". www.ithistory.org. Archived from the original on 2013-10-04. Retrieved 2016-01-29.