The HP110 may not be a calculator, but maybe someone can answer a dumb question or two...
1) The keyboard on mine is a bit dicky. Sometimes keys need to be pressed twice, sometimes they bounce and I get 2 or more characters. Is the keyboard accessable in a way that I can clean it? Any suggestions as to how?
2) The battery is (probably) completely dead. The 110 dies if left unplugged for more than about the blink of an eye. The battery appears to be held in with screws and a strap (with 3 connectors??). What is the battery (nicad, Lead acid, mice and wheel, other)? Any precautions on taking it out? Repair/Replace options?
The 110 is a personal favorite of mine. I used one *many* years ago, and I had to get one again. This is the first series with the 16x80 screen.
Interestingly (for us Australians) it has the inbuild modem that was not available in Australia (at least initially).