|Re: Postion of + - x / keys|
Message #7 Posted by Kevin Schoedel on 8 Feb 2001, 9:06 a.m.,
in response to message #2 by Dan M
As Chris points out, (almost) all the desktops have
the +-x/ order, and (almost) all the calculators have
either +-x/ on the right, or /x+- on the left. Note
that for 'matching' pairs of models like the HP67 and HP97,
the handheld has /x+- and the desktop has +-x/.
Most non-HP calculators I've seen have had the
right-side +-x/ layout. (A few old ones have the keys in
a square, or some other odd variation.) I think this
makes sense from the point of view of the evolution of
adding machines, beginning with a large "+" on the right,
and adding new operations above in the order of ease of
mechanical implementation. I assume HP switched their
handhelds to this layout to be consistent with everyone
As for the /x+- layout, last time this came up I speculated
that HP put the most 'important' operation, "+", on the 'home'
row of the keyboard, that is, across from "5", and the rest
of the layout follows: /x should go together, so they're together where they fit,
below "+" , and "x" is adjacent to "+" since multiplication
is more important and 'closer' to addition than is division.