= Сообщение: 6793 из 12550 ====================================== ENET.SYSOP = От : Alexey Vissarionov 2:5020/545 16 Jun 18 22:22:22 Кому : BjФrn Felten 16 Jun 18 22:22:22 Тема : Fiber connection to every household. FGHI : area://ENET.SYSOP?msgid=2:5020/545+5b2567c6 На : area://ENET.SYSOP?msgid=2:203/2+5b255642 = Кодировка сообщения определена как: CP866 ================================== Ответ: area://ENET.SYSOP?msgid=2:203/2+5b256fd8 ============================================================================== Good ${greeting_time}, BjФrn!
16 Jun 2018 20:26:10, you wrote to me:
AV>> Quartz oscillators are much more cheaper. Also, there's NTP... BF> Quartz oscillators are priced by their precision. The cheapest BF> are sold to Asian watchmakers, the more precise they are the BF> more expensive they become. The most expensive ones are sold to BF> the Swiss watchmakers.
That's much more simple: Asian watchmakers don't test the crystals, while European (at least Russian; I know that for sure) really do.
BF> A common household quartz controlled clock typically have a BF> precision of +/- five minutes per one battery life, when you BF> have to reset it anyway.
Good clocks have a faster oscillators (1 MHz or higher) and are able to skip some excessive ticks on a daily or (better) hourly basis. That results in a 1...2 seconds per month tolerance, which is acceptable for most cases.
-- Alexey V. Vissarionov aka Gremlin from Kremlin gremlin.ru!gremlin; +vii-cmiii-cmlxxvii-mmxlviii
