From Stephen J Thomas <firstname.lastname@example.org>
HP did acknowlege a bug in the 11C, but never released a ROM version
which corrected this (I don't know why this popped into my brain last
nite after lying dormant for several years).
If you are entering a number with a decimal point, and then use the
back-arrow key to erase any (and all) digits to the right of the
decimal point AND erase the decimal point, the magnitude of the
integer portion of the number will be incremented by 1 when the ENTER
key is pressed.
1 1 . <- ENTER
should put 11 in the X-register, but 12 is entered instead.
2 . 3 4 CHS <- <- <- ENTER
will put -3 in the X-register instead of -2.
I'm not sure if this also occurs when a function key -- such as [+] --
is pressed rather than [ENTER], or if this occurs on any other
The mentioned bugs arent present by S/N 2750A15169.