Bingo! I would do something like this: "The LPRC oscillator is separate from the FRC. It oscil- lates at a nominal frequency of 31.25 kHz. The LPRC oscillator is the clock source for the Power-up Timer (PWRT), Watchdog Timer (WDT), Fail Safe Clock Mon- itor (FSCM) and PLL reference circuits. It may also be used to provide a low-frequency clock source option for the device in those applications where power consumption is critical, and timing accuracy is not required." Then do something like this: http://pastebin.com/f4ee1f4fc On Fri, Dec 5, 2008 at 2:19 PM, solarwind wrote: > How much you wanna bet it'll be more clunky and less usable? I've written > most of the code, made the keypad, assembled the LCD, mounted it onto the > case. All that's left to do is make my decision about the microcontroller > and mount it. > > > On Fri, Dec 5, 2008 at 7:06 AM, Olin Lathrop wrote: > >> solarwind wrote: >> > I'm trying to build a scientific RPN calculator using a PIC >> > microcontroller. It will be battery powered and for use in school. >> >> If you just want to use it, then this is silly. Get a HP 33S, which I >> think >> is the only RPN scientific calculator they still make. >> >> Unless you're doing this for the experience, this is a waste of time that >> will result in something much more klunky and less usable than the 33s, >> which can be had for under $50 if I remember right. >> >> >> ******************************************************************** >> Embed Inc, Littleton Massachusetts, http://www.embedinc.com/products >> (978) 742-9014. Gold level PIC consultants since 2000. >> -- >> http://www.piclist.com PIC/SX FAQ & list archive >> View/change your membership options at >> http://mailman.mit.edu/mailman/listinfo/piclist >> > > > > -- > ..::[ solarwind ]::.. > -- ..::[ solarwind ]::.. -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist