Editing 1977 in science (section)

==Computer science==
* January – The [[Commodore PET]] is announced at Winter CES. The first units are delivered to customers in October; back-orders for the popular system last for months and in early 1978 Commodore discontinues the 4KB model. The PET is the launch computer for Commodore which will later gain prominence with the [[Commodore 64]] in 1982, the single most produced home computer with over 17 million produced.<ref>{{Cite web|url=http://oldcomputers.net/c64.html|title = Commodore 64 computer}}</ref>
* June 5 – The first [[Apple II]] [[home computer]]s (largely designed by [[Steve Wozniak]]) go on sale in the U.S., among the first successful mass-produced [[microcomputer]]s.<ref>{{cite magazine|url=https://www.wired.com/science/discoveries/news/2007/06/dayintech_0605|title=June 5, 1977: From a Little Apple a Mighty Industry Grows|magazine=Wired|first=Tony|last=Long|date=June 5, 2007|accessdate=June 2, 2009|archiveurl=https://web.archive.org/web/20090528031056/http://www.wired.com/science/discoveries/news/2007/06/dayintech_0605|archivedate=May 28, 2009|url-status=live}}</ref><ref>{{cite web|last=Reimer|first=Jeremy|url=https://arstechnica.com/articles/culture/total-share.ars/4|title=Total share: 30 years of personal computer market share figures|work=Ars Technica|date=December 14, 2005|accessdate=May 25, 2010}}</ref>
* August 3 – The [[TRS-80]] Model I is announced at a press conference in New York City. Radio Shack begin sales in September, and despite a sales forecast of only 3,000 units per year, over 10,000 are sold in just one and a half months. Radio Shack will later develop an entire line of computers over the following 20 years.
* September – The [[Atari 2600]] [[home video game console]] is released.