Two questions: 1.- Someone knows the meaning of J-K? There is a story about a TI employee, Jack Kilby, who has invented this integrated circuit, the same who started Compaq Co. 2.- Someone who help me to create an advantage - disadvantage table, or common uses for the different flip-flop types. I'll appreciate it. Regards. -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads