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Acetronics2
- 7th October 2005, 13:53
Only one line for 12 buttons ... without polling !!!

see here : http://www.edn.com/contents/images/33105di.pdf

Alain
Mike_Lynch
- 7th October 2005, 14:18
I came across another circuit, Same concept, this one built
around a 74HC14 Schmitt inverter. Just FYI
http://www.elecdesign.com/Articles/Print.cfm?ArticleID=1869

ML