> Here's another way to do it for a wall clock display... set up an > oscillator/divider (or even a 555 timer) to generate a frequency close to, > but faster than 65536 Hz. Setup a 16 bit counter clocked by that signal. > When the 1PPS signal arrives, start the counter. After 65536 pulses the > counter will overflow... stop the counter (and set up for the next 1PPS > trigger) when that happens. The Q0 output (lowest bit) from the counter > will be a burst of 32768 pulses that repeats once a second. Use that to > drive your clock. The slight pause between bursts of 32768 pulses will not > be noticed on the clock display. Neat hack. Thanks. You can do it with a tiny micro. Some of them come with builtin R-C oscillators so the parts count would be really low. -- These are my opinions. I hate spam.