From: jl@glen--canyon.com   
      
   On Wed, 26 Nov 2025 16:24:52 GMT, Jan Panteltje    
   wrote:   
      
   >>Bill Sloman wrote:   
   >>>On 26/11/2025 8:16 pm, Jan Panteltje wrote:   
   >>>> "Tom Del Rosso" wrote:   
   >>>>> john larkin wrote:   
   >>>>>   
   >>>>> Good on-chip oscillators would be cool, on uPs and FPGAs.   
   >>>>   
   >>>> I have an electric oven that seems to use the on-chip oscillatior. The   
   >>>> clock gains a few minutes a day. Thay could have omitted the clock and   
   >>>> no one would miss it.   
   >>>   
   >>> On chip oscillators are temperature dependent   
   >>   
   >>But some more so that others. I had cheap Casio watch that I bought in   
   >>the 1980's and it went through three lithium batteries until I managed   
   >>to leave it in the washing machine a couple of years ago, which wrecked it.   
   >   
   >https://casiosupport.zendesk.com/hc/en-us/articles/360000101132   
   Quartz-movemCASIO AMERICA, INC. Watches Atomic/WaveCeptor   
   > All Casio watches have Quartz movements.   
   >  Quartz-is powered by an electronic oscillator synchronized by quartz   
   crystal.   
   >  The electric current causes the quartz inside to pulsate with a precise   
   frequency   
      
   Probably all watches now have an off-chip quartz tuning-fork   
   resonator, usually 2^15 Hz. MEMS resonators are getting pretty good   
   lately, and the resonator and the oscillator circuit can be on the   
   same silicon chip, so I expect MEMS watches soon.   
      
   Bulova once made a watch that used a low frequency tuning fork   
   resonator that directly operated a tiny ratchet.   
      
   Given that everybody carries a phone now, why have a watch?   
      
      
   John Larkin   
   Highland Tech Glen Canyon Design Center   
   Lunatic Fringe Electronics   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)