Challenge: Generate a 64 in the display (RPN)

[Valentin Albillo]

(09-02-2020 11:24 PM)Gerson W. Barbosa Wrote:  

(09-02-2020 11:09 PM)Valentin Albillo Wrote:  Are you implying that the HP-25 isn't a classic !!?? C'mon, Gerson !

I consider even the more recent HP-15C, my first one, a Classic. The above is the curator’s definition.

      
      
Yes, but we aren't dealing here with "the curator's definition". Notice that Gene's OP literally says (my underline):

            "Your challenge is to take a classic RPN machine [...]"

with no quotes around "classic", no capitalization "Classic", no underline of course, and no reference to the curator's "The Classics (1972)".

Best regards.
V.