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.
... age of 18, 7.5% from 18 to 24, 33.5% from 25 to 44, 23.9% from 45 to 64, and 6.9% who are 65 years of age or older. The median age is 34 years. For every 100 females ...