Doubt with exponents input in early HP35.

[AndiGer]

On the German label you posted in the picture of the calc here
http://www.hpmuseum.org/forum/thread-9846.html
There is written that CHS must be entered first.
That's true with the older versions of the HP-35.
In newer version you can enter CHS also later. Guess the label was never adopted. Have a 1302S here that has this on the label as well.

Another interesting thing with CHS is documented under the description of the HP-35 on this website:
"The HP-35 allowed the user to press the CHS sign before or during number entry. If a number was in the display as a result of something other than digit entry, pressing CHS negated it, but if the CHS key was then followed by a digit, the calculator assumed the CHS was actually meant for the following entry. Thus the previous number displayed was pushed onto the stack without the (already displayed) sign change. This feature could be confusing and later models required the CHS key to be pressed after the first digit of a number."

Andi