Several 1980s home computers have celebrated their 30th or 35th anniversaries over the last week

Commodore 64 is 30 – http://www.bbc.co.uk/news/technology-19055707
Dragon 32 is 30 – http://www.reghardware.com/2012/08/01/the_dragon_32_is_30_years_old/
Tandy/Radio Shack TRS-80 is 35 – http://gizmodo.com/5931793/happy-35th-birthday-to-radio-shacks-trs+80-personal-computer-a-leader-in-its-day