best way to clear a hp42s?

General discussion about calculators, Swiss Micros or otherwise
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best way to clear a hp42s?

Post by dm319 » Tue Sep 12, 2017 7:25 pm

Always thought it was a bit strange that clearing the stack was a three-button operation. Not sure whether doing that or <-/0 ENTER ENTER ENTER is better.

Does anyone have a better way? I like my 12c's ability to clear with just f - sigma.

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Re: best way to clear a hp42s?

Post by Drchiper » Wed Sep 13, 2017 6:59 am

The benefit of 0 ENTER ENTER ENTER is that it works on all HP related RPN calculators.
The recommended way for the 42 is f CLEAR CLST which saves 1 key press.
The shortest I know for for instance the HP-15C is [-][ON], clearing all memory hence also the stack :D
I'm sure the HP-42S has (and DM42 will have) something similar, but I do not have those (yet), so cannot comment on them.

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Re: best way to clear a hp42s?

Post by RAPo » Wed Sep 13, 2017 4:55 pm

I made a little program called CA. It executes stack+alpha clear, reset flags and display functionality according to my standards. Pressing xeq CA is all what you need.
DM41X beta: SN00018.
DM42 beta: SN00074.
DM10L: SN056/100.
DM11L: SN 02058.
DM15L: SN2074.
DM16L: SN2156.
DM15, DM16, DM41
and a whole bunch of the original HP's,

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