Clear Stack (CLST, CLSTK) and LastX

[Thomas Klemm]

(03-12-2015 09:14 PM)MarkHaysHarris777 Wrote:  I can use the 35s all day and 'never' touch the [ENTER] key either...

I wonder how you calculate 7*9+3*13 with your method.

(02-18-2015 08:24 PM)MarkHaysHarris777 Wrote:  Consider the following key sequence: [3] [x↔y] [←] [4] [X]
(...)
How many ways are there to manipulate the stack registers to accomplish the same purpose? Remember it is not important how the operands get into X and Y necessarily, only that they get there. Try this one:

[4] [R↓] [←] [3] [R↑] [X] (or) [4] [R↑] [←] [3] [X] (or) [CLSTK] [4] [+] [3] [X]

From all the alternative key sequences given only one works:
[4] [R↑] [←] [3] [X]

But then e.g. the HP-42S lacks a [R↑] key and thus you might be tempted to use the [R↓] key thrice. Thus you really prefer pressing four keys instead of one?

Cheers
Thomas