Which calculators had no known bugs?

[PANAMATIK]

(08-05-2017 10:26 AM)Didier Lachieze Wrote:  There is this one shared with the 11C and the 15C.

n ENTER CHS 1 +

When performed on HP-25 it always ignores the CHS key and gives n+1 as result instead of 1-n. This could be a bug, because you can see -n in the displayed x register, but x will be overwritten by 1. Also this could be considered normal, because the behaviour is predictable and treats zero like any other number.

Bernhard