12C Platinum vs. 48GX vs. 50g (Speed Test)

[JDW]

(10-01-2020 12:39 AM)rprosperi Wrote:  There are at least 5 'generations' of 12CP, likely more; among them:

1. Silver face, 1x2032, No Undo, BkSp functions (fastest model, as no Undo overhead)
2. Silver face, 1x2032, adding Undo, Bksp (slower)
3. Black face, 1x2032, 25th Ann Model
4. Black face, 1x2032
5. Black face, 2x2032

"At least" is correct terminology insofar as my "Silver Face" (i.e., "silver" at the top of the calc surrounding the LCD only, while the rest of the calculator is black) has 2 CR2032 batteries (packaging copyright dated 2015). Also, mine has the left-facing blue arrow underneath the minus (-) key, which allows me to press g and then - to backspace 1 character. The look of my 12CP almost perfectly matches the 12CP Emulator here, except for the fact the emulation lacks the logos to left/right of the LCD, and except for the fact there is a silly orange "OFF" above the ON key, which for the life of me I cannot figure out. Pressing ON multiple times turns the calc ON & OFF, so there's no meaning to press f and then ON like other HP calcs. As a result, I cannot see why HP printed "OFF" above the physical ON key. Can you?