liz wrote:There's a glass wall in the common room of the Computer Lab at the University in Cambridge that has tape from EDSAC etched in it. Unfortunately, there is an error in the tape, which someone noticed back when we were students; I don't think the powers that be ever got round to changing it, though, because it was hellishly expensive to get it custom-etched in the first place!
When they etched the MS-BASIC panel (the FIRST time ... yes, you know what that implies

) the obviously right-brain type art major who was more interested in the typeface than the content managed to get all of the hard part right - the hex code - but only put seven ASCII characters per line on the right side of the panel, instead of the eight that corresponded to the hex codes on the left side! An even number of nybbles on the left means there has to be an even number of bytes on the right - DUH! The staff is heavy on historians and museum curators and light on true geeks, but on any given day, there are at least a dozen Silicon Valley veteran volunteers on-site who could catch that kind of thing in their sleep. Do they ever consult us? NoooOOOooo ... they don't like to think they could possibly ever be wrong, so they just don't ask - we have to play hide-and-seek-the-goofups with them
There were other whoopsies the exhibitionists (and that's probably accurate in all of its possible meanings) committed, including leaving enough space for someone to reach around an acrylic barrier and snatch one of the rare early mobile devices on display. They did manage to make it impossible to walk off with the "Lift-a-Luggable" Osborne in its sewing-machine style case - you can reach through a slot in an acrylic box to grab the handled and pick it up. Younger visitors can't believe business types actually hauled those things around on airplanes - they'd be classified as a massive throw-weight nuclear weapon today! At least no one has car-jacked the half of a 1980s Mercedes 500SEL in the microprocessor exhibit (first use of a microprocessor in a street-legal vehicle was for Bosch anti-lock brakes in that model), but the decade is young ...

The best things in life aren't things ... but, a Pi comes pretty darned close!

"Education is not the filling of a pail, but the lighting of a fire." -- W.B. Yeats
In theory, theory & practice are the same - in practice, they aren't!!!