1950's: Experimental computers.
1960's: Mainframes (IBM 360, etc).
1970's: Mini computers (DEC PDP-11, etc).
1980's: Micro computers ---> PC's.
1990's: The Internet.
It wasn't until the mid 1990's that it became obvious to the general public that the major computer innovation of that decade was the Internet (ok, I know the 'net was actually invented many years before, but I'm talking about widespread use).
I haven't seen anything on that scale develop yet in this decade. There have been lots of obvious incremental improvements, but no huge generational change.
Would anyone like to suggest what it might be - or is everyone who knows keeping quiet, in the hope of making big money? [grin]
John (I'm still experimenting with how to get line breaks into posts, so sorry if the formatting is a mess)