Path: utzoo!utgpu!news-server.csri.toronto.edu!mailrus!wuarchive!zaphod.mps.ohio-state.edu!sdd.hp.com!decwrl!ucbvax!hplabs!hpfcso!hpldola!hp-lsd!swp
From: swp@hp-lsd.COS.HP.COM (Steve Peurifoy)
Newsgroups: comp.sys.handhelds
Subject: Re: HP 35 manuals, anybody got them ?
Message-ID: <10580002@hp-lsd.COS.HP.COM>
Date: 17 Aug 90 04:50:06 GMT
References: <1990Aug13.122421.15541@mlb.semi.harris.com>
Organization: HP Logic Systems Division - ColoSpgs, CO
Lines: 18


  
> And sort of changing the topic in a message stream, but it is related,
> Bill Wickes mentioned at the recent Chicago HP user's conference (and
> can be seen in the Jake Schwartz video tape series!) that the 35 had one
> bug in its firmware.  Does anybody know what this bug is?

The bug that I am aware of affected only early versions of the HP-35.  If
you took the natural log of 2.02 and then raised e to the resulting number
you got back 2 even!!  I'm not sure but I believe the error is in the e^x
function.  The reason 2.02 reveals this bug is related to the decimal
shift-add algorithms used to calculate the functions in the HP-35; there
are other numbers that give similar errors.

I wish I had one of the affected HP-35's; they might be collector's items.

Steve Peurifoy
HP Logic Systems Division