|Pioneer-series display units|
Message #6 Posted by Karl Schneider on 14 Oct 2006, 4:27 p.m.,
in response to message #5 by Randy
...The 32Sii LCD is *unique* within the Pioneer line-up.
Indeed that is correct, because the HP-32SII is the only "mid-range" Pioneer -- i.e., those which have the coarse dot-matrix displays showing 12 blocks of 7x5 pixels -- with two shift keys and offering use of equations inside a keystroke program.
(The two-shift-key HP-20S and HP-21S are low-end Pioneers with 7-segment LCD's. The mid-range HP-22S provided the HP-32SII's equation capability, but no keystroke programming.)
I have examples of three mid-range Pioneer displays:
- "HP-14B, HP-22S, and early HP-32S" with squat dot-matrix blocks and tall menu-pointer arrows, underneath a flush display window
- "Improved HP-32S" with taller blocks and shorter menu-pointer arrows, underneath a recessed display window
- "HP-32SII", resembling the "Improved HP-32S", but with two annunciators for shift-key arrows, as well as an annunciator "EQN" for equation mode, replacing the unneeded "INPUT" annunciator.
I've noted that the display contrast on my 2002 HP-32SII is less sensitive to viewing angle than the one on my 1990 HP-32S with "improved" display. It's possible that further refinements were made after 1991, when the first HP-32SII was released.
Edited: 14 Oct 2006, 4:37 p.m.