Started programming 40+ years ago on an English Electric KDF9 with 14 K of 48-bit words.  (Gee whiz, haven't things changed... where did all the little lights and toggle switches go?)  Wrote coms systems, OS bits, word-processing systems, 3D sewerage system mapping, image processing, optimising code generators for cardiac implants (nobody died) and a bunch of other stuff I forget.  Still writing software, mostly for this new-fangled Internet thing, and enjoying it but much prefer riding my bike. Anyone for Paris-Brest-Paris this year?