HP (Hewlett-Packard) Calculator HP 12C Financial Calculator User Manual

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Section 1: Getting Started 27
File name: hp 12c pt_user's guide_English_HDPMF123E27 Page: 27 of 275
Printed Date: 2005/8/1 Dimension: 14.8 cm x 21 cm
If you want to calculate
)15(
8
−
, use the following keystrokes:
Keystrokes
(ALG mode)
Display
OO
0.00
Clears any pending operations.
8zgØ5-
5.00
No calculation is done.
1
gÙ
4.00
Calculates 5
−
1.
³
2.00
Calculates
)15(
8
−
.
Storage Registers
Numbers (data) in the hp 12c platinum are stored in memories called “storage
registers” or simply “registers.” (The singular term “ memory” is sometimes used in
this handbook to refer to the entire collection of storage registers.) Four special
registers are used for storing numbers during calculations (these “stack registers”
are described in Appendix A), and another (called the “LAST X” register) is used
for storing the number last in the display before an operation is performed in RPN
mode. In addition to these registers into which numbers are stored automatically,
up to 20 “data storage” registers are available for manual storage of numbers.
These data storage registers are designated R
0
through R
9
and R
.0
through R
.9
. Still
other storage registers — referred to as the “financial registers” — are reserved for
numbers used in financial calculations.
Storing and Recalling Numbers
To store the number from the display into a data storage register:
1. Press ? (store).
2. Key in the register number: 0 through 9 for registers R
0
through R
9
, or .0
through .9 for registers R
.0
through R
.9
.
Similarly, to recall a number from a storage register into the display, press
:
(recall), then key in the register number. This copies the number from the storage
register into the display; the number remains unaltered in the storage register.
Furthermore, when this is done, the number previously in the display is
automatically held inside the calculator for a subsequent calculation, just as the
number in the display is held when you key in another number.

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