HP35s RPN Series # 3 [ENTER]

[Sanjeev Visvanatha]

(02-18-2015 08:24 PM)MarkHaysHarris777 Wrote:  What makes [ENTER] a conundrum?

[ENTER] causes confusion because its called 'ENTER' and because it really doesn't enter anything.

It enters the X register value into the Y register. I have always thought of it as "STO Y". This is what it does in its simplest sense. The named function of STOring to a stack register did not exist at the time the earliest HP RPN machines came out.