Harold Hallikainen wrote: > If each scan yields the same scan code, decrement a debounce counter. > When the debounce counter hits zero, flag that you've got a key. Thanks! That's very clever. I have always done it by checking for valid keypress and then using a timed debounce delay. Using a decremented counter for scan combination on every scan is a great idea and something I never would have thought of. :o) -Roman -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics