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

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File name: hp 12c pt_user's guide_English_HDPMF123E27 Page: 237 of 275
Printed Date: 2005/8/1 Dimension: 14.8 cm x 21 cm
Appendix B
Algebraic Mode (ALG)
Although most of this material is included at the appropriate places throughout this
manual, it is collected here for easy reference.
To select algebraic mode, press
f[
. When the calculator is in algebraic mode,
the
ALG
status indicator is lit.
Note: In ALG mode, it is a good idea to begin calculations by pressing
OO. This will ensure that there are no pending arithmetic calculations
that might interfere with the solution of a new problem. The reason this key is
pressed twice is that pressing it the first time clears the display and X-register
only, allowing you to correct an erroneous entry by keying in a correct
number. The second press of O will clear any pending operations as well.
Pressing the } key is another way to ensure that there are no pending
operations before beginning a new calculation.
Simple Arithmetic Calculations in ALG Mode
To calculate 21.1 + 23.8:
Keystrokes
(ALG mode)
Display
OO
0.00
Clears any pending operations.
21.1
+
21.10
Enters first number and prepares to
add.
23.8
23.8
Enters the second number.
}
44.90
}
completes the calculation.
Once a calculation has been completed:
z pressing another digit key starts a new calculation, or
z pressing an operator key continues the calculation.
Keystrokes
(ALG mode)
Display
OO
0.00
Clears any pending operations.
77.35
-
77.35
Enters first number and prepares to
subtract.

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