4-banger?

[walter b]

(01-23-2014 05:58 PM)Jeff O. Wrote:  The above thread mentioned using the 10bii+ as the basis for such a calculator. The 10bii+ has the same 6-pin port behind the battery cover as the 30b, and can be reflashed in exactly the same way. ... But I did make a pretty picture, so if anyone thinks they could do it, I'll be happy to send you the LCD table. (... No overlay is required for the keyboard plane as I put all labels on the keys. Just need to use a black sharpie to blank out the factory blue labels on the keyboard plane.)

Nice clean design Nicer than the HP-10C in a way. Just my usual few remarks in random order:

• The tests were more complete in vintage calcs by including ≤ instead of <. But I doubt we need the full test box here. Look at the HP-10C for comparison.
• The ON/OFF key may be relabeled ↓/↑ instead since ON and OFF will be used less frequently in a session than single-stepping through programs.
• A primary LASTx is a strong statement for sure.
• I miss basic statistics, i.e. Sigma+, Sigma-, mean and standard deviation. It has been even on the most basic 'scientific' calcs since the HP-45.
• I admit I really miss the wide ENTER. It's THE RPN ICON. So I end up recommending the HP-30b again (hey, we are able to push its sales figures, aren't we? ) as some years ago.
  

Just my 20m€.

d:-)