Bob Fehrenbach wrote: > > Matt Bonner wrote: > >Is cost an important factor? We use a Statek 32kHz oscillator: 10uA at > >5V and 0.001% frequency tolerance (13 seconds a year) over an operating > >temperature of -55 deg C to +125 deg C. About US$19 for singles. > > My arithmetic says that .001% = 10 ppm or about 5 minutes/year. > Yet, I grew up in the slide rule days and always had problems with > those decimal points. > Slide rule? Luxury! I was using my fingers and toes. You're right, of course - my mistake resulted from forgetting to remove my left sock. --Matt