|Hidden functions on the HP-35S ???|
Message #1 Posted by Slawomir Bucki on 23 Apr 2008, 12:41 p.m.
I received my new HP-35S yesterday and have been playing with it for a couple of hours. I'm an experienced HP user and fan (owned an HP34C, HP-10C, HP-11C, HP-41CV, HP-42S, HP-32SII, HP-33S).
I "discovered" an interesting feature. Let me use an example to illustrate my point. When in ALG mode you can evaluate the sine of a angle by pressing [SIN], keying-in the argument, and pressing [ENTER], as shown below:
keystroke [SIN] 30 [ENTER]
display SIN() SIN(30) 0.5000
So far, so good. Now, I realized that by using the cursor keys and the back-arrow key [<--] I can not only delete / correct the argument, but also individual characters from the function label. This made me think and I tried this:
keystroke [RCL] [S] [RCL] [I] [RCL] [N] [()] 30 [ENTER]
display S_ SI_ SIN_ SIN() SIN(30) 0.5000
BINGO !!! The calculator does not only use the function keys to "understand" user's instructions, it can also "read" the instructions if written character-by-character using the same syntax as the function key "shortcut"! Has anybody noted this feature?
Now, this opens a completely new possibility. Could there be any "hidden" functions in the calculator's operating system that are not accessible directly from the keyboard (because they lack a dedicated key), but that can be called up by typing them letter-by-letter?
Considering this, it would be nice if the HP-35S had an [ALPHA] mode like the old HP-41C to allow more efficient typing, as well as alphanumeric messages (without the cumbersome EQN / flag 10 approach).