|Re: Functions for PRG mode on the keyboard|
Message #21 Posted by Walter B on 26 May 2011, 10:15 a.m.,
in response to message #20 by Ángel Martin
Ángel & Dieter,
The HP41C got 39 keys, the WP34S 37. Besides the trivial equalities, where are the differences?
The 41C features five keys without a shifted operation: ON, USER, PRGM, ALPHA, and the golden prefix. The 34S sports only three, i.e. f, g, and h.
The 41C in ground state has Sigma+, 1/x, SQRT, SIN, COS, TAN, LN, LOG, and SST unshifted. For the 34S in ground state, Sigma+, 1/x, SQRT, y^x, SST, BST, and EXIT are primary. So the difference is SIN, COS, TAN, LN, LOG versus y^x, BST, and EXIT - 5 vs. 3 matching the different amount of keys. BST and EXIT are set for the 34S, y^x may be stored for later discussion.
Of the shifted operations on the 41C, what does the 34S not show on its surface? Most prominent, the 41C features ASN and only one CATALOG. It shows five tests on its keyboard including FS?, and two more flag commands, and BEEP. That's it. OTOH, the 34S gives you keyboard access to hyperbolics, fraction modes, integer modes and operations, statistics, etc. plus a structured system of catalogs. We do not feature anything like ASN beyond the four hotkeys so far, however, and it's improbable we will ever do in this project.
VIEW is not decided yet - it may well stay on the keyboard of the 34S.
Yes, we don't show SF, CF, FS? - just tell me three adjacent places on the 34S where to put them and what to kick out there and we'll check. And yes, we didn't put the other functions on the surface Dieter mentioned. Again, feel free to suggest where you want them and what shall be dropped instead. But we are in a project stage now where I can hardly accept such plain wishes like "put this or that on the keyboard" - you have to tell me what you want off in exchange.
XROOT is a function we may consider taking in X.FCN - if my fellow projecteers agree on it d:-)
Edited: 26 May 2011, 10:16 a.m.