Posted by Bob A on September 29, 2010 at 12:51:28:
In Reply to: NUM function posted by Carl Haaser on September 29, 2010 at 12:45:09:
formerly worked on Singer/Friden System TEN... predecessor to Quantel etc...
seem to remember that the FN instruction (Form a Number) would pass with P..Y and treat them as an "over punch" yielding negative number -1..-9
At the same time (1970s...) the UNIVACs would allow -0 ... but that's a story for another time....
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