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HP 12C Platinum User Manual Page 101

Financial calculator.
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Section 7: Mathematics and Number-Alteration Functions
Integer. Pressing gÑ replaces the number in the display by its integer
portion — that is, it replaces each digit to the right of the decimal point by 0. The
number is changed inside the calculator as well as in the display. In RPN mode,
the original number can be recalled to the display by pressing gF.
Fractional. Pressing gT replaces the number in the display by its fractional
portion — that is, it replaces all digits to the left of the decimal point by 0. Like
gÑ, gT changes the number inside the calculator as well as its displayed
version. In RPN mode, the original number can be recalled to the display by
pressing gF.
All of the above functions are used basically in the same way. For example, to find
the reciprocal of 0.258:
Keystrokes
.258
y
Any of the above functions can be done with a number in the display resulting
from a previous calculation, as well as with a number you have just keyed in. The
examples below indicate how gF can recall the original number for further
use in RPN mode.
Keystrokes
(RPN mode)
fCLEARX
fB
fCLEARX
gF
Display
Keys the number into the display.
0.258
The reciprocal of 0.258, the
3.88
original number.
Display
Displays all 10 digits of the number
3875968992
inside the calculator.
Display returns to normal format
3.88
when X key is released.
The number now in the display
3.88
appears the same as before, but ...
Displaying all 10 digits of the
3880000000
number inside the calculator shows
fB has changed the number to
match its displayed version.
Display returns to normal format.
3.88
The integer portion of the number
3.00
previously displayed.
Recalls the original number to the
3.88
display in RPN mode only.
101

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