""I have a last-generation HP-35, which, according to the serial number, was built in the second week of 1973. It was given to me by a friend who used it in the

""I have a last-generation HP-35, which, according to the serial number, was built in the second week of 1973. It was given to me by a friend who used it in the field when he was a surveyor and it shows: the silver bezel is worn, the face has the tell-tale crosshatch pattern of over-agressive cleaning, there is mildew (or something) in the battery compartment, the contacts are corroded, and the battery pack is, obviously, years beyond dead. I’m sure it has been decades since it was last used, but I plugged it into the wall, cycled the on/off switch a few times and there it was—a bright, red 0. The calculator is now 45 years old, but it still works. Of course it still works."" Computers don't get old. Their users do. It doesn't matter how old the computer is, there is a user out there, somewhere. (Disclaimer: kept every computer I've ever used/owned/developed-for since 1978.. I know for sure my HP is in some hallow box, somewhere..)