NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Russian formula for Casio
From: Alexandre Eremenko
Date: 2005 Feb 13, 13:01 -0500
From: Alexandre Eremenko
Date: 2005 Feb 13, 13:01 -0500
I don't understand this whole business of negative number conversion:-) We are talking about a non-programmable calculator: why would one want to convert negative numbers on it?? Enter the positive number, it will convert it, then if necessary switch sign. (Actually my Cassio does not permit entering negative numbers, strictly speaking. To enter -1, for example, you have to enter 1, and then press the sign change key). Alex. On Sun, 13 Feb 2005, Bill wrote: > Frank > > I'm confused. 20d 30' 15" would be 20.50416667. -20d 30' 15" would be > -20.50416667. Where does -20'30'15' (all minutes) come from? > > If I enter 20.3015 and then press the 2nd DMS-DD keys on my TI-30Xa, then I > would get 20.50416667 decimal degrees. > > Are you suggesting degrees must be entered and converted, then minutes, then > seconds on a Casio? > > Perhaps it's just a difference between Chicago and Associate Press style > manuals. A co-worker of Kurt Vonnegut, Jr. at GE taught me that spaces > between letters and commas--like advertising account executives--add no > information to the process but do on occasion make things clearer. Of > course he worded it better.> > Bill > > > > > > They're not really conversion "routines" per se, George. As noted in other > > messages, these casios are not programmable. It's really just a D.M.S. key > > that we're talking about. So, for example, you could enter -20, press DMS > > (it's labeled symbolically), then enter 30, press DMS again, and finally enter > > 15, and press DMS again. The calculator displays -20'30'15' and internally > > it's represented as > > -20.50416667. >