Path: utzoo!attcan!uunet!microsoft!alonzo
From: alonzo@microsoft.UUCP (Alonzo GARIEPY)
Newsgroups: comp.sys.handhelds
Subject: Re: HP-48 Comparison Test
Keywords: HP-48SX, calculators, portable computers, handhelds, HP
Message-ID: <53549@microsoft.UUCP>
Date: 14 Mar 90 01:47:42 GMT
References: <39230@apple.Apple.COM> <326@cbnewsb.ATT.COM>
Reply-To: alonzo@microsoft.UUCP (Alonzo GARIEPY)
Distribution: comp.sys.handhelds,comp.sys.hp
Organization: Microsoft Corp., Redmond WA
Lines: 16

In article <326@cbnewsb.ATT.COM> neal@druhi.ATT.COM writes:
> I also look forward to the gurus figuring out how to change the time
> rate of the "date" and "time" functions.  So far mine seems to lose
> about a half second a day.  I may have to revert to the hand-crafted
> routines (based on the internal 8192-tick-per-second clock) I use on my
> hp28S to get an accurate time (e.g. for timing occultations of stars).

There are some limits on the resolution of the clock tick.  HP has
published a program on the Serial Interface Kit disk that will correct
the clock at necessary intervals to keep it extremely accurate.  This
was aimed primarily at those using the calculator for astrogation, but
it should serve you just as well.  This program works by scheduling
correction alarms.  It calbrates itself after you have corrected it
manually several times.

alonzo