Past and Current Technologies By mrconnolly Jan 1, 1001 Earliest time fingers used for calculation Jan 1, 1621 Slide Rule Slide rule invented, using Napier's ideas on logarithms Jan 1, 1984 Macintosh computer Jan 1, 1985 Microsoft launches Windows Jan 1, 2009 Microsoft releases Windows 7 Jan 1, 2010 Apple releases the Apple iPad
