This article presents a detailed timeline of events in the history of computing. For a narrative explaining the overall developments, see the related History of computing.
Stephen White: A Brief History of Computing, http://ox.compsoc.net/~swhite/history. An excellent Computer history site; the above is a modified version of his timeline, used with permission.
... is spread out with 29.0% under the age of 18, 5.0% from 18 to 24, 29.0% from 25 to 44, 24.2% from 45 to 64, and 12.7% who are 65 years of age or older. The median age ...