From: bill.sloman@ieee.org   
      
   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.   
      
   It's equally cheap Casio replacement - WR100M - is appreciably less   
   temperature dependent than it's predecessor. It loses or gains perhaps a   
   couple of seconds a month. I check it against my computer clock from   
   time to time, and it is more than a few seconds out  I reset it, but   
   only once or twice a year.   
      
   If you spend enough money you can put a rubidium clock on a printed   
   circuit board but it is a lot bulkier than a single chip.   
      
   --   
   Bill Sloman, Sydney   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)