thanks.  actually, maxim/dallas also makes a more accurate 32.??khz
oscillator for rtc clocks as well, targeted at servers that need a more
accurate clock independent of temperature variations.  i may even put it
in one or more of my machines and use one for a network time server when
i get my network up (soon).

Matthew Brush wrote:
>
> I plan on eventually making an alarm like this (sans the keypad idea) and I
> plan on using an RTC from Dallas (pretty much the same as in a PC, maybe
> exatcly: DS1887 i think).  It would be ideal IMHO to use a similar RTC
> because it has a good crystal in the DIP package as well as a backup battery
> which makes it ideal for an alarm clock.  It has NVRam also including
> locations to set alarm IRQ etc, and has a pretty simple parallel interface.
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