Analog Devices Inc. (ADI) (Weybridge, UK) has introduced a clock IC that enables system designers to use the standard, readily available and free 1-pps (pulse-per-second) signal of GPS (global ...
If you’re looking for a 1-second time reference, you’d probably just grab a GPS module off the shelf and use the 1PPS output. As demonstrated by [InazumaDenki], though, an old quartz clock module can ...