Generic Calculator Shield for Arduino Photo-journal

[BarryMead]

Mark: What did you have in mind for "KEY" labels? There doesn't seem to be much room between the keys, and the tall switches aren't friendly to a paper overlay. Are you planning to keep a "Cheat Sheet" off to the side?
Perhaps you are planning to have the switches poke through holes in a plastic, or metal cover plate where you will have lots of room for labels?