NP-41 Emulator (may be)

[Helix]

(09-28-2015 01:29 PM)Chris Chung Wrote:  Thanks for the catch, will correct for the next PCB design. I am thinking of separating the keypad and the display + MCU into two PCB units. This will save PCB fabrication cost and potentially keypad upgrades.

So, if corrections can be made, here are additional suggestions:

- The "E-" "E+" and "CLE" writing should be replaced by "Σ-" "Σ-" and "CLΣ", like in the last versions of the NP-25: http://www.hpmuseum.org/forum/thread-217...l#pid31814
- Also, the "R v" writing to simulate the "R↓" key is not very pleasing. In the NP-25 of the link above, the writing is much better.
- "x<y?" should be replaced by "x<=y?". I understand that space was limited on the NP-25 PCB, but there is plenty of room in the NP-41.
- your PCB image is small so I can be mistaken, but I see "e²" instead of "ex" (x superscript), and a dot instead of a coma for the ALPHA dot writing.