I've just had a nostalgia attack - here's the link to a web site run by one of the authors of VisiCalc Executable for the IBM PC - the original spread sheet. The program is available to download (it's only 27K!) and it runs, without modification, on Windows2000 - which is a very impressive feet of backward compatibility on MS's part.

Think I'll make this history week - each day a different piece of memorabilia.