strangest systems I've sent email from

William Donzelli wdonzelli at
Fri May 20 22:50:30 CDT 2016

>   First off, can you supply a list of architectures that are NOT 2's
> complement integer math that are still made and in active use today?  As far
> as I can tell, there was only one signed-magnitude architecture ever
> commercially available (and that in the early 60s) and only a few 1's
> complement architectures from the 60s (possibly up to the early 70s) that
> *might* still be in active use.

There are probably a couple hundred Unisys 2200 systems left in the
world (no one really knows the true number). Of course, when the C
standards were being drawn up, there were many more, with a small but
significant share of the mainframe market.

Will (C sucks)

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