HP 12C User manual

File name: HP 12c Pt Converted_user's guide_English_HDP0F123E02_080207 Page: 1 of 281
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HP 12c Platinum Financial Calculator
User's guide
H
Edition 5
HP part number F2231AA-90001

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Printed Date: {2007/8/2Dimension: 14.8 cm x 21 cm
Notice
REGISTER YOUR PRODUCT AT: www.register.hp.com
THIS MANUAL AND ANY EXAMPLES CONTAINED HEREIN
ARE PROVIDED “AS IS” AND ARE SUBJECT TO CHANGE
WITHOUT NOTICE. HEWLETT-PACKARD COMPANY MAKES
NO WARRANTY OF ANY KIND WITH REGARD TO THIS
MANUAL, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY, NON-INFRINGEMENT
AND FITNESS FOR A PARTICULAR PURPOSE.
HEWLETT-PACKARD CO. SHALL NOT BE LIABLE FOR ANY
ERRORS OR FOR INCIDENTAL OR CONSEQUENTIAL
DAMAGES IN CONNECTION WITH THE FURNISHING,
PERFORMANCE, OR USE OF THIS MANUAL OR THE
EXAMPLES CONTAINED HEREIN.
© 1981-82, 1999, 2002-2005, 2006-07 Hewlett-Packard
Development Company, L.P. Reproduction, adaptation, or translation
of this manual is prohibited without prior written permission of
Hewlett-Packard Company, except as allowed under the copyright
laws.
Hewlett-Packard Company
16399 West Bernardo Drive
MS 8-600
San Diego, CA 92127-1899
USA
Printing History
Edition 5 August 2007

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Introduction
About This Handbook
This HP 12c Platinum user's guide is intended to help you get the most out of your
investment in your HP 12c Platinum Programmable Financial Calculator. Although
the excitement of acquiring this powerful financial tool may prompt you to set this
handbook aside and immediately begin “pressing buttons,” in the long run you’ll
profit by reading through this handbook and working through the examples it
contains.
Following this introduction is a brief section called Making Financial Calculations
Easy—which shows you that your HP 12c Platinum does just that! The remainder of
this handbook is organized basically into three parts:
zPart I (sections 1 through 7) describes how to use the various financial,
mathematics, statistics, and other functions (except for programming)
provided in the calculator:
zSection 1 is about Getting Started. It tells you how to use the keyboard,
how to do simple arithmetic calculations and chain calculations, and
how to use the storage registers (“memories”).
zSection 2 tells you how to use the percentage and calendar functions.
zSection 3 tells you how to use the simple interest, compound interest, and
amortization functions.
zSection 4 tells you how to do discounted cash flow analysis, bond, and
depreciation calculations.
zSection 5 tells you about miscellaneous operating features such as
Continuous Memory, the display, and special function keys.
zSections 6 and 7 tell you how to use the statistics, mathematics, and
number-alteration functions.
zPart II (sections 8 through 11) describes how to use the powerful
programming capabilities of the HP 12c Platinum.
zPart III (sections 12 through 16) gives you step-by-step solutions to
specialized problems in real estate, lending, savings, investment analysis,
and bonds. Some of these solutions can be done manually, while others
involve running a program. Since the programmed solutions are both
self-contained and step-by-step, you can easily employ them even if you don’t
care to learn how to create your own programs. But if you do start to create
your own programs, look over the programs used in the solutions: they
contain examples of good programming techniques and practices.

4 Introduction
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zThe various appendices describe additional details of calculator operation as
well as warranty and service information.
zThe Function Key Index and Programming Key Index at the back of the
handbook can be used as a handy page reference to the comprehensive
information inside the manual.
Financial Calculations in the United Kingdom
The calculations for most financial problems in the United Kingdom are identical to
the calculations for those problems in the United States — which are described in
this handbook. Certain problems, however, require different calculation methods in
the United Kingdom than in the United States. Refer to Appendix G for more
information.
For More Solutions to Financial Problems
In addition to the specialized solutions found in Sections 12 through 16 of this
handbook, many more are available in the optional HP 12c Platinum Solutions
Handbook. Included are solutions to problems in lending, forecasting, pricing,
statistics, savings, investment analysis, personal finance, securities, Canadian
mortgages, learning curves in manufacturing, options pricing, and queuing theory.
The solutions handbook is available online at the HP 12c Platinum website.
HP would like to thank the following for their contribution:
Gene Wright, Lipscomb University, Nashville, TN, USA
and
Tony Hutchins, Wellington, NZ
Jordi Hidalgo, Barcelona, Spain

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Contents
Introduction.......................................................................... 3
About This Handbook.....................................................................3
Financial Calculations in the United Kingdom.....................................4
For More Solutions to Financial Problems...........................................4
Part I: Problem Solving.............................................. 15
Section 1: Getting Started.......................................................... 16
Power On and Off........................................................................16
Low-Power Indication..............................................................16
Adjusting the Display Contrast.................................................16
The Keyboard .............................................................................. 16
Keying in Numbers ................................................................17
Digit Separators ....................................................................17
Negative Numbers ................................................................17
Keying in Large Numbers .......................................................18
Backspacing .........................................................................18
The CLEAR Keys ....................................................................19
Undo Operation....................................................................20
The RPN and ALG Keys ..........................................................20
Simple Arithmetic Calculations in RPN Mode...................................21
Simple Arithmetic Calculations in ALG Mode ...................................22
Chain Calculations in RPN Mode...................................................23
Chain Calculations in ALG Mode ...................................................26
Parentheses Calculations ...............................................................26
Storage Registers..........................................................................27
Storing and Recalling Numbers...............................................27
Clearing Storage Registers......................................................29
Storage Register Arithmetic .....................................................29
Section 2: Percentage and Calendar Functions ............................ 31
Percentage Functions..................................................................... 31
Percentages in RPN Mode ...................................................... 31
Percentages in ALG Mode ......................................................32
Net Amount in RPN Mode......................................................33
Net Amount in ALG Mode ......................................................33
Percent Difference..................................................................34
Percent of Total in RPN Mode..................................................35

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Percent of Total in ALG Mode ................................................. 36
Calendar Functions...................................................................... 37
Date Format ......................................................................... 37
Future or Past Dates............................................................... 38
Number of Days Between Dates ............................................. 40
Section 3: Basic Financial Functions.............................................41
The Financial Registers ..................................................................41
Storing Numbers into the Financial Registers .............................41
Displaying Numbers in the Financial Registers ...........................41
Clearing the Financial Registers .............................................. 42
Simple Interest Calculations........................................................... 42
Financial Calculations and the Cash Flow Diagram.......................... 44
The Cash Flow Sign Convention.............................................. 46
The Payment Mode ............................................................... 46
Generalized Cash Flow Diagrams........................................... 47
Compound Interest Calculations..................................................... 49
Specifying the Number of Compounding Periods and the Periodic
Interest Rate ......................................................................... 49
Calculating the Number of Payments or Compounding Periods ... 49
Calculating the Periodic and Annual Interest Rates..................... 55
Calculating the Present Value ................................................. 56
Calculating the Payment Amount............................................. 59
Calculating the Future Value....................................................61
Odd-Period Calculations ........................................................ 63
Amortization ............................................................................... 69
Section 4: Additional Financial Functions.................................... 72
Discounted Cash Flow Analysis: NPV and IRR ................................. 72
Calculating Net Present Value (NPV) ....................................... 73
Calculating Internal Rate of Return (IRR) ................................... 78
Reviewing Cash Flow Entries................................................... 79
Changing Cash Flow Entries................................................... 80
Bond Calculations ....................................................................... 82
Bond Price ........................................................................... 82
Bond Yield........................................................................... 83
Depreciation Calculations............................................................. 84
Section 5: Additional Operating Features ................................... 86
Continuous Memory..................................................................... 86
The Display................................................................................. 86

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Status Indicators ....................................................................86
Number Display Formats ........................................................87
Scientific Notation Display Format ...........................................88
Special Displays ....................................................................89
The Key in RPN Mode..........................................................90
The Key in RPN Mode .........................................................90
Arithmetic Calculations With Constants ....................................91
Recovering From Errors in Digit Entry........................................91
Section 6: Statistics Functions..................................................... 93
Accumulating Statistics..................................................................93
Correcting Accumulated Statistics ...................................................94
Mean .........................................................................................94
Standard Deviation.......................................................................96
Linear Estimation ..........................................................................97
Weighted Mean...........................................................................99
Section 7: Mathematics and Number-Alteration Functions.......... 100
One-Number Functions ...............................................................100
The Power Function in RPN Mode.................................................102
The Power Function in ALG Mode.................................................102
Part II: Programming................................................ 105
Section 8: Programming Basics ................................................ 106
Why Use Programs?...................................................................106
Creating a Program....................................................................106
Running a Program.....................................................................108
Program Memory ........................................................................110
Identifying Instructions in Program Lines ...................................110
Displaying Program Lines....................................................... 111
The 000 Instruction and Program Line 000 .......................114
Expanding Program Memory .................................................114
Setting the Calculator to a Particular Program Line ....................116
Executing a Program One Line at a Time........................................116
Interrupting Program Execution......................................................119
Pausing During Program Execution..........................................119
Stopping Program Execution ................................................. 124
Section 9: Branching and Looping.............................................127
Simple Branching....................................................................... 127

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Looping.....................................................................................128
Conditional Branching ................................................................ 131
Section 10: Program Editing....................................................... 141
Changing the Instruction in a Program Line .................................... 141
Adding Instructions at the End of a Program...................................142
Adding Instructions within a Program ............................................144
Adding Instructions by Replacement .......................................144
Adding Instructions by Branching...........................................146
Section 11: Multiple Programs.................................................... 151
Storing Another Program ............................................................. 151
Running Another Program............................................................155
Part III: Solutions .......................................................157
Section 12: Real Estate and Lending............................................158
Annual Percentage Rate Calculations With Fees..............................158
Price of a Mortgage Traded at a Discount or Premium..................... 161
Yield of a Mortgage Traded at a Discount or Premium ....................163
The Rent or Buy Decision .............................................................165
Deferred Annuities ...................................................................... 171
Section 13: Investment Analysis.................................................. 174
Partial-Year Depreciation.............................................................. 174
Straight-Line Depreciation...................................................... 174
Declining-Balance Depreciation .............................................179
Sum-of-the-Years-Digits Depreciation .......................................183
Full- and Partial-Year Depreciation with Crossover ...........................187
Excess Depreciation....................................................................194
Modified Internal Rate of Return....................................................195
Black-Scholes Formula for Valuing European Options.......................197
Section 14: Leasing................................................................... 205
Advance Payments..................................................................... 205
Solving for Payment............................................................. 205
Solving for Yield ................................................................. 209
Advance Payments With Residual ................................................. 212
Solving for Payment.............................................................. 212
Solving for Yield .................................................................. 215

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Section 15: Savings....................................................................217
Nominal Rate Converted to Effective Rate...................................... 217
Effective Rate Converted to Nominal Rate...................................... 219
Continuous Rate Converted to Effective Rate...................................220
Section 16: Bonds......................................................................221
30/360 Day Basis Bonds ........................................................... 221
Annual Coupon Bonds................................................................226
Appendices .......................................................................231
Appendix A: RPN and the Stack ........................................232
Getting Numbers Into the Stack: The Key..............................233
Termination of Digit Entry .....................................................234
Stack Lift.............................................................................234
Rearranging Numbers in the Stack ...............................................234
The Key .....................................................................234
The Key.......................................................................235
One-Number Functions and the Stack ...........................................235
Two-Number Functions and the Stack............................................235
Mathematics Functions .........................................................236
Percentage Functions............................................................236
Calendar and Financial Functions.................................................237
The LAST X Register and the Key .........................................238
Chain Calculations in RPN Mode.................................................239
Arithmetic Calculations with Constants ..........................................240
Appendix B: Algebraic Mode (ALG).................................. 242
Simple Arithmetic Calculations in ALG Mode .................................242
Keying in Negative Numbers ( ) .............................................243
Chain Calculations in ALG Mode .................................................243
The Key in ALG Mode .......................................................244
The History Stack in ALG Mode....................................................244
Parentheses Calculations .............................................................245
Percentage Functions...................................................................246
Percent Difference................................................................246
Percent of Total....................................................................247
The Power Function.....................................................................247
Appendix C: More About L.......................................... 248
Appendix D: Error Conditions........................................... 250
Error 0: Mathematics ..................................................................250
Error 1: Storage Register Overflow................................................ 251

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Error 2: Statistics.........................................................................251
Error 3: IRR................................................................................251
Error 4: Memory ........................................................................251
Error 5: Compound Interest..........................................................252
Error 6: Storage Registers ............................................................253
Error 7: IRR ................................................................................253
Error 8: Calendar...................................................................... 254
Error 9: Service ......................................................................... 254
Pr Error .................................................................................... 254
Appendix E: Formulas Used..............................................255
Percentage.................................................................................255
Interest ......................................................................................255
Simple Interest .....................................................................255
Compound Interest.............................................................. 256
Amortization ............................................................................. 256
Discounted Cash Flow Analysis ....................................................257
Net Present Value ................................................................257
Internal Rate of Return...........................................................257
Calendar...................................................................................257
Actual Day Basis..................................................................257
30/360 Day Basis...............................................................257
Bonds ...................................................................................... 258
Black-Scholes Formula for Valuing European Options .....................259
Depreciation ..............................................................................259
Straight-Line Depreciation..................................................... 260
Sum-of-the-Years-Digits Depreciation ...................................... 260
Declining-Balance Depreciation ............................................ 260
Modified Internal Rate of Return....................................................261
Advance Payments......................................................................261
Interest Rate Conversions .............................................................261
Finite Compounding.............................................................261
Continuous Compounding.....................................................261
Statistics ....................................................................................262
Mean.................................................................................262
Weighted Mean ..................................................................262
Linear Estimation..................................................................262
Standard Deviation ..............................................................262
Factorial .............................................................................262
The Rent or Buy Decision .............................................................263
Appendix F: Batteries, Warranty, and Service Information..264
Batteries ................................................................................... 264

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Low-Power Indication ..................................................................264
Installing a New Batteries.....................................................264
Verifying Proper Operation (Self-Tests)...........................................266
Perchlorate Material – special handling may apply. ........................267
HP Limited Hardware Warranty and Customer Care .......................268
Customer Care...........................................................................269
Regulatory Information................................................................272
Disposal of Waste Equipment by Users in Private Household in the
European Union......................................................................... 274
Appendix G: United Kingdom Calculations.........................275
Mortgages ................................................................................275
Annual Percentage Rate (APR) Calculations.................................... 276
Bond Calculations ...................................................................... 276
Function Key Index ............................................................278
Programming Key Index.................................................... 282
Subject Index ................................................................... 284

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Making Financial
Calculations Easy
Before you begin to read through this handbook, let’s take a look at how easy
financial calculations can be with your hp 12c platinum. While working through
the examples below, don’t be concerned about learning how to use the calculator;
we’ll cover that thoroughly beginning with Section 1.
Example 1: Suppose you want to ensure that you can finance your daughter’s
college education 14 years from today. You expect that the cost will be about
$6,000 a year ($500 a month) for 4 years. Assume she will withdraw $500 at the
beginning of each month from a savings account. How much would you have to
deposit into the account when she enters college if the account pays 6% annual
interest compounded monthly?
This is an example of a compound interest calculation. All such problems involve at
least three of the following quantities:
zn: the number of compounding periods.
zi: the interest rate per compounding period.
zPV: the present value of a compounded amount.
zPMT: the periodic payment amount.
zFV: the future value of a compounded amount.
In this particular example:
znis 4 years × 12 periods per year = 48 periods.
ziis 6% per year ÷ 12 periods per year = 0.5% per period.
zPV is the quantity to be calculated — the present value when the financial
transaction begins.
zPMT is $500.
zFV is zero, since by the time your daughter graduates she (hopefully!) will
not need any more money.
To begin, turn the calculator on by pressing the ;key. Then, press the keys
shown in the Keystrokes column below.*
*If you are not familiar with the use of an hp calculator keyboard, refer to the description on
pages 16 and 17.

Making Financial Calculations Easy 13
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Note: A battery symbol ( ) shown in the upper-left corner of the display
when the calculator is on signifies that the available battery power is nearly
exhausted. To install new batteries, refer to Appendix F.
The calendar functions and nearly all of the financial functions take some
time to produce an answer. (This is typically just a few seconds, but the¼,
!, L, and Sfunctions could require a half-minute or more.) During
these calculations, the word running flashes in the display to let you know
that the calculator is running.
Keystrokes Display
fCLEARHf2 0.00 Clears previous data inside the
calculator and sets display to show
two decimal places.
4gA 48.00 Calculates and stores the number
of compounding periods.
6gC 0.50 Calculates and stores the periodic
interest rate.
500P500.00 Stores periodic payment amount.
g× 500.00 Sets payment mode to Begin.
$-21,396.61 Amount required to be deposited.*
Example 2: We now need to determine how to accumulate the required deposit
by the time your daughter enters college 14 years from now. Let’s say that she has
a paid-up $5,000 insurance policy that pays 5.35%, compounded annually. How
much would it be worth by the time she enters college?
In this example, we need to calculate FV, the future value.
Keystrokes Display
fCLEARG-21,396.61 Clears previous financial data
inside the calculator.
14n14.00 Stores the number of compounding
periods.
5.35¼5.35 Stores the periodic interest rate.
5000Þ$ -5,000.00 Stores the present value of the
policy.
*Don’t be concerned now about the minus sign in the display. That and other details will be
explained in Section 3.

14 Making Financial Calculations Easy
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Keystrokes Display
M10,371.79 Value of policy in 14 years.
Example 3: The preceding example showed that the insurance policy will
provide about half the required amount. An additional amount must be set aside to
provide the balance (21,396.61 – 10,371.79 = 11,024.82). Suppose you make
monthly payments, beginning at the end of next month, into an account that pays
6% annually, compounded monthly. What payment amount would be required in
order to accumulate $11,024.82 in the 14 years remaining?
Keystrokes Display
fCLEARG10,371.79 Clears previous financial data
inside the calculator.
14gA 168.00 Calculates and stores the number
of compounding periods.
6gC 0.50 Calculates and stores the periodic
interest rate.
11024.82M11,024.82 Stores the future value required.
g 11,024.82 Sets payment mode to End.
P–42.03 Monthly payment required.
Example 4: Suppose you cannot find a bank that currently offers an account
with 6% annual interest compounded monthly, but you can afford to make $45
monthly payments. What is the minimum interest rate that will enable you to
accumulate the required amount?
In this problem, we do not need to clear the previous financial data inside the
calculator, since most of it is unchanged from the preceding example.
Keystrokes Display
45ÞP –45.00 Stores payment amount.
¼0.43 Periodic interest rate.
:gC 5.13 Annual interest rate.
This is only a small sampling of the many financial calculations that can now be
done easily with your hp 12c platinum. To begin learning about this powerful
financial tool, just turn the page.

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Part I
Problem Solving

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Section 1
Getting Started
Power On and Off
To begin using your hp 12c platinum, press the ;key*. Pressing ;again
turns the calculator off. If not manually turned off, the calculator will turn off
automatically 12 minutes after it was last used.
Low-Power Indication
A battery symbol ( ) shown in the upper-left corner of the display when the
calculator is on signifies that the available battery power is nearly exhausted. To
replace the batteries, refer to Appendix F.
Adjusting the Display Contrast
The display’s readability depends on lighting, your viewing angle, and the display
contrast setting. You can adjust the display contrast, by holding down the fkey
and pressing +or -.
The Keyboard
Many keys on the hp 12c platinum perform two or even three functions. The
primary function of a key is indicated by the characters printed in white on the
upper face of the key. The alternate function(s) of a key are indicated by the
characters printed in gold above the key and the characters printed in blue on the
lower face of the key. These alternate functions are specified by pressing the
appropriate prefix key before the function key:
zTo specify the alternate function printed in
g
old
above a key, press the gold prefix key (f), then
press the function key.
zTo specify the primary function printed on the uppe
r
face of a key, press the key alone.
zTo specify the alternate function printed in blue on the
lower face of a key, press the blue prefix key (g),
then press the function key.
*Note that the ;key is lower than the other keys to help prevent its being pressed
inadvertently.

Section 1: Getting Started 17
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Throughout this handbook, references to the functions shown on the keyboard in gold
under the bracket labeled
“
CLEAR” appear throughout this handbook preceded by
the word “CLEAR” (for example, “The CLEAR
H
function …” or “Pressing
f
CLEAR
H
…”).
If you press the for gprefix key mistakenly, you can cancel it by pressing
fCLEARX. This can also be pressed to cancel the ?, :, and ikeys.
(These keys are “prefix” keys in the sense that other keys must be pressed after
them in order to execute the corresponding function.) Since the Xkey is also
used to display the mantissa (all 10 digits) of a displayed number, the mantissa of
the number in the display will appear for a moment after the X key is released.
Pressing the for gprefix key turns on the corresponding status indicator — f
or g— in the display. Each indicator turns off when you press a function key
(executing an alternate function of that key), another prefix key, or fCLEARX.
Keying in Numbers
To key a number into the calculator, press the digit keys in sequence, just as if you
were writing the number on paper. A decimal point must be keyed in (using the
decimal point key) if it is part of the number unless it appears to the right of the last
digit.
Digit Separators
As a number is keyed in, each group of three digits to the left of the decimal point
is automatically separated in the display. When the calculator is first turned on
after coming from the factory — or after Continuous Memory is reset — the
decimal point in displayed numbers is a dot, and the separator between each
group of three digits is a comma. If you wish, you can set the calculator to display
a comma for the decimal point and a dot for the three-digit separator. To do so,
turn the calculator off, then press and hold down the .key while you press ;.
Doing so again sets the calculator to use the original digit separators in the
display.
Negative Numbers
To make a displayed number negative — either one that has just been keyed in or
one that has resulted from a calculation — simply press Þ(change sign) —.
When the display shows a negative number — that is, the number is preceded by
a minus sign — pressing Þremoves the minus sign from the display, making the
number positive.

18 Section 1: Getting Started
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Keying in Large Numbers
Since the display cannot show more than 10 digits of a number, numbers greater
than 9,999,999,999 cannot be entered into the display by keying in all the digits
in the number. However, such numbers can be easily entered into the display if the
number is expressed in a mathematical shorthand called “scientific notation.” To
convert a number into scientific notation, move the decimal point until there is only
one digit (a nonzero digit) to its left. The resulting number is called the “mantissa”
of the original number, and the number of decimal places you moved the decimal
point is called the “exponent” of the original number. If you moved the decimal
point to the left, the exponent is positive; if you moved the decimal point to the
right (this would occur for numbers less than one), the exponent is negative. To key
the number into the display, simply key in the mantissa, press Æ(enter exponent),
then key in the exponent. If the exponent is negative, press Þafter pressing
Æ.
For example, to key in $1,781,400,000,000, we move the decimal point 12
places to the left, giving a mantissa of 1.7814 and an exponent of 12:
Keystrokes Display
1.7814Æ12 1.7814 12 1,781,400,000,000 entered
in scientific notation.
Numbers entered in scientific notation can be used in calculations just like any
other number.
Backspacing
While you are entering a number, pressing gÚ deletes the last character you
entered. After performing a calculation, pressing gÚ deletes the current
number.
Keystrokes
(RPN mode) Display
12345gÚgÚ
.63\
123.63
Correcting removes the 4 and
5. gÚ clears the most recent
digit entered.
5+128.63
gÚ 0.00 Clears the calculator line.

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Keystrokes
(ALG mode) Display
12345gÚgÚ
.63+
123.63
Correcting removes the 4 and
5. gÚ clears the most recent
digit entered.
5}128.63 }is also labeled the
\ key.
gÚ 0.00 Clears the calculator line.
The CLEAR Keys
Clearing a register or the display replaces the number in it with zero. Clearing
program memory replaces the instructions there with gi000. There are
several clearing operations on the hp 12c platinum, as shown in the table below:
Key(s) Clears:
ODisplay and X-register.
fCLEAR²Statistics registers (R1through R6), stack registers, and
display.
fCLEARÎProgram memory (only when pressed in Program mode).
fCLEARGFinancial registers.
fCLEARHData storage registers, financial registers, stack and LAST X
registers, and display.
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, since the } key will
evaluate any pending expressions.

20 Section 1: Getting Started
File name: HP 12c Pt Converted_user's guide_English_HDP0F123E02_080207 Page: 11 of 281
Printed Date: {2007/8/2Dimension: 14.8 cm x 21 cm
Undo Operation
Every time you press O, gÚ, fCLEARH, fCLEAR²or
fCLEARG key to clear data, the status indicator appears in the display.
This means you can press gß to undo the last operation (i.e., to recover the
data.)
Note: the Undo function is only available immediately after data has been
cleared. When the Undo indicator is turned off no operation can be undone.
The RPN and ALG Keys
The calculator can be set to perform arithmetic operations in either RPN (Reverse
Polish Notation) or ALG (Algebraic) mode.
In Reverse Polish Notation (RPN) mode, the intermediate results of calculations are
stored automatically, hence you do not have to use parentheses.
In algebraic (ALG) mode, you perform addition, subtraction, multiplication, and
division in the traditional way, using parentheses if needed.
To select RPN mode: Press f] to set the calculator to RPN mode. When
the calculator is in RPN mode, the RPN status indicator is lit.
To select ALG mode: Press f[ to set the calculator to ALG mode. When
the calculator is in ALG mode, the ALG status indicator is lit.
Example
Suppose you want to calculate 1 + 2 = 3.
In RPN mode, you enter the first number, press the \key, enter the second
number, and finally press the arithmetic operator key: +.
In ALG mode, you enter the first number, press +, enter the second number, and
finally press the equals key: }. Don’t forget to press OO before doing the
calculation.
RPN mode ALG mode
1 \ 2 +1 +2 }
You can choose either ALG (Algebraic) or RPN (Reverse Polish
Notation) mode for your calculations. Throughout the manual, most
examples are shown in both modes. The Keystrokes column will
indicate RPN mode or ALG mode where the keystrokes differ. When
the keystrokes are the same, the column is simply titled
“Keystrokes”.