|Re: xhpcalc - another HP calculator discontinued...|
Message #5 Posted by Vassilis Prevelakis on 9 Dec 2002, 3:51 a.m.,
in response to message #4 by Renato
This is all the documentation there is:
HPCalc. This is the standard HPCalc program that we used to sell. Also a very nice implementation, and it should be self-explanatory to operate. (If you store HPCalc on another disc, make sure you store all its "dot" - invisible - files with it, (.HPCalc.fnt and .HPCalc.hlp). You can find these dot files using the "ls -a" command (ls is on your CommandsI disc). HPCalc will not run without these associated 'dot' files.
The program has on-line help, but apart from changing the display mode (FIX, SCI, etc) the rest is rather intuitive.
To seems to me that the command to change the display mode has given the HP engineers a lot of headaches, since they were always changing it. E.g. on the earlier models (HP 67, 97), there was a mode key (FIX, SCI, ENG) and a DSP key that defined the number of displayed digits. Then that number was made an argument to the mode command (e.g. FIX 2 on the HP 41C). There were also variations like the HP 21 where DSP 2 would select SCI 2 and DSP . 2 would select FIX 2).
The HPCalc adopts yet another approach where DSP 2 selects FIX 2 and DSP EEX 2 selects SCI 2. (Yes I had to use the on-line help to find this).