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RPN Scientific Firmware for the Spikenzielabs Calculator Kit
02-24-2016, 09:37 PM
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RE: RPN Scientific Firmware for the Spikenzielabs Calculator Kit
(02-24-2016 08:48 PM)securd Wrote:  ...
3. I modeled stack behavior after the HP-15c, with x (bottom), y, z, t (top) registers. I also track Last x in the software, but ran out of buttons to recall it. ...

Intriguing! I like that you use a held-down key to act as the shift.

When you used all the keys to create shifted functions, did you ever consider using repeated presses of a button to toggle through a sequence of meanings? I understand that TI has done that with several of their (recent?) calculators.
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RE: RPN Scientific Firmware for the Spikenzielabs Calculator Kit - striegel - 02-24-2016 09:37 PM



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