At 12:24 PM 4/23/98 +0100, you wrote: >What's the easiest way to program a PIC16C74A surface mount device in-circuit? >I have a PICSTart+ but these new devices I'm using will be manufactured and >placed (unprogrammed) by our PCB manufacturer. Hi Adrian, PICstart is ok to do the ISP, I have done this with PIC16C73A SOIC package, use a cable connect PICstart PB7 PB6 RESET and GND, operate just like normal pragramming. >Developers of GPS satellite-based tracking systems It seems we do the same job, I use PIC16C73A to control a Motorola SM50 mobile radio and send out the Rockwell GPS message. Good Luck Jerry Meng, BA1FB mailto:ba1fb@qsl.net http://www.qsl.net/ba1fb