Cuvee RPN-67 & Complex mode

[Nigel (UK)]

Thank you for this perspective. As well as RPN-67 I also own RPN-45, 70, and 97 so I'm certainly a fan of your work! To be honest I'd never looked at the RPN-67 complex mode before reading Matt's post about it; I was a little surprised at what it was like, given how complex mode is implemented in RPN-45, but that's fine. There's nothing wrong with being different. All of these calculators look great and work brilliantly!

Incidentally, the following key sequence allows the calculation of (1+2i) x (3+4i) on RPN-67 entirely within complex mode:

• Make sure complex mode is active;
• Press 2 x<>y 1 ENTER 4 x<>y CLx 3 x.
  

This leaves -5 in X and 10 in Y, as it should. The CLx disables stack lift and allows the 3 to be entered without changing Z and T.

Nigel (UK)