Hello sir, I unable to interface serial timekeeper ht1380 to pic 16c54c/16f876. I have problem with data transfor. So please, anybody having written code about this , kindly mail me and inform at what crystal frequency are working? Thanking you sathish _________________________________________________________ Click below to visit monsterindia.com and review jobs in India or Abroad http://monsterindia.rediff.com/jobs -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads