Univac 1100 series - one's complement.
On 8/22/2015 4:23 PM, Sean Conner wrote: > > For my own morbid curiosity, and because it came up on another mailing > list I'm on [1], what machines commercially avaialble were sign magnitude > and one's complement? Every machine I've encountered was two's complement > (okay, IEEE 754 [2] is a sign magnitude format but I'm talking about integer > implementations here, not floating point). I've only found reference to one > sign magnitude computer (the IBM 7090, release in 1959) and a few one's > complement machines (mostly the PDP series from DEC). > > Where there others? And honestly, are there any machines that use > anything other than two's complement today? > > -spc > > [1] http://lua-users.org/lists/lua-l/2015-08/msg00386.html > > [2] AKA floating point. > >
