Recommended. Fascinating anecdotal/chatty description of the evolution of electronic sensors from about 1960 to 1980s. I've only skimmed it but it would interest many electrical engineers. Print a copy and read it in the bath. If you only use showers you're out of luck. http://www.allsensors.com/history/SensorHistory.pdf -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads