"Bill Jeffrey" wrote in message
news:_WC6e.38667$Xs.37009@fed1read03...
I had a multi-function / multi-button Casio that did this. After I
owned it a few years, I found that I had to press one of the buttons
harder and harder to make it register. I changed the battery, but it
didn't help. This happened over the space of only a few weeks, and then
another button started doing the same thing. I concluded that the
conductive material on the buttons had either worn away or gotten dirty,
and since I couldn't get ready access to the buttons, I abandoned it.

Yep. My buddy and I both got Casio watches that had a full
scientific/programmers calculator built in, but they both died as the
buttons failed.
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N