Comment on Timekeeping Before ClocksparentComments−russdill2yThe mems temperature controlled oscillators are also very good, 0.05ppm range (about a second every 8 months). They are tiny and low power, but still >$79.
Comments
The mems temperature controlled oscillators are also very good, 0.05ppm range (about a second every 8 months). They are tiny and low power, but still >$79.