HP 20b Consultant Financial, 30b Professional Storing and Recalling Numbers, Recall Arithmetic

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Storing and Recalling Numbers

The calculator has ten memories available for use during calculations. These memories are numbered from 1–9 and 0. To store a number in a memory, press :$, followed by

the key representing the memory number. To recall a number stored in a memory, press L

followed by the key representing the memory number. You can use the store and recall functions for these memories any time a number is displayed, or when you wish to enter a number.

For example, to store 15 in memory 1, press 15:$1.

To recall the number in memory 1, press L1.

You can also perform operations to numbers stored in memories. For example, press 5:$2to store 5 in memory 2. To add 12 to the value of memory 2, press

12:$+2. Later on, during a calculation, you can press L2 to recall memory 2. Note how the current value now stored in memory 2 is 17, (5 +12). +-*and /are valid mathematical operations for memories.

To view the stored values in memories 1–9 and 0, press :t, followed by <

or >repeatedly to scroll through each memory starting with memory 1 (Mem 1). Note that in the Memory menu, you can change the value of any memory by selecting the memory

and typing a number followed by the tkey.

Recall Arithmetic

In RPN, typing L+2adds the value of memory 2 to the first level of the stack, but it will not modify the stored value of memory 2. This is useful, as it "saves" one stack level.

You can also use -*and /after L.

Storing and Recalling with Time Value of Money (TVM) Keys

To store the current number in the Time Value of Money (TVM) variables, press :$ followed by the desired TVM key.

To recall the stored value of a TVM variable, press Lfollowed by the key of the desired TVM variable.

Note: pressing Ldoes not calculate the variable; it recalls the current value.

24 Mathematical Calculations

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Contents HP Part Number NW238-90001 Edition 1, December Legal Notice HP 20b Business Consultant HP 30b Business Professional On/Off/Cancel Line, alphanumeric scrolling Common MathematicalFunctions and Math Math Program menuPage Table of Contents Cash Flow Example Sample Cash Flow Diagrams Bonds Bond Menu Amortization Interest Conversion MenuCanadian Mortgage Example Black-Scholes MenuBasic Features Adjusting the Display ContrastWelcome to your new HP Financial Calculator Turning the Calculator On and OffTwo Line Display Mode Menu Setting PreferencesCursor Dd.mmyyyy Changing the Calculation Mode Primary, Secondary, and Tertiary Key Functions Using the Input and Equals Keys AnnunciatorsInput Key Equals KeyReset Menu Editing and Clearing Entries On/CE KeyAccessing Menus and Menu Maps Memory and the Memory MenuBasic Features Fixed Cost Price Profit Quantity DWNMathematical Calculations Mathematical FunctionsNumber Entry and Display Mathematical functions are locatedChain Mode Algebraic ModeIor =, followed by an operation key Reverse Polish Notation RPN ModeRPN Stack See -2for an example using the last number function Last Number+ 4 x 5 + U3IO1c23 I56c 3I4 5I6Duplicating a Number on the Stack One-Number Functions and the Math Menu RPN Stack and the Swap OperationRandom number Math MenuDWN Probability Sub-menu 10I 12ITwo-Number Functions 15I3hBinomial Functions Storing and Recalling with Time Value of Money TVM Keys Storing and Recalling NumbersRecall Arithmetic Percentages Recalling a Menu Item Value in a MenuRounding Numbers Mathematical Calculations Time Value of Money Time Value of Money TVM KeysCalculating Payments on a Loan Stores or calculates the amount of each periodic paymentAmortization 360N1400 00V Nb Per Start Balance Principal Interest10Y Creating an Amortization ScheduleAmortization Example KeysDisplayDescription Interest Conversion Menu To open the Interest Conversion menu IConv pressUsing the Interest Conversion Menu 360Canadian Mortgages TVM Canada DWNO300 N6Y35 0000 Canadian Mortgage ExampleCash Flows 000.00Cash Flow Example 8000 50004500 40001150 00IAnalyzing Cash Flows MirrInv. I% Safe I% DWN Mirr FmrrOpens the NPV menu Editing Cash Flows Displays FMRR% Sample Cash Flow Diagrams Sample Cash Flow Diagrams Cash FlowsBonds Set.Date Mat.DateBond Menu CPN%Bond Calculation Example 8201042020 =L1+ Volatility % Dividend % Call price Put price Black-Scholes Calculation MenuStock price Strike price Time to maturity Risk-free % Black-Scholes Menu Volatility % input Black-Scholes Example 80I 85I78I 72IPress to scroll to Date Calculation Date Calculation MenuDate Calculation Example Date Days Between Actual Cal.3602010 3120 10IBreak-even Example Break-evenBreak-even Menu 1500 00I 250300 100 00IBusiness Problems Percent Calculation Menu15I Percent Calculation Examples20I 80I Is what % of 80?Book Value Depreciable DepreciationPress Ito scroll through the options Sline Depreciation Menu SoydDepreciation Example 10000I 500 Depreciation Statistical Operations Ax2+bx+c onlyData and Stats Menus Statistics Menu Items Description Std. Dev Statistics Example 1I1 50I 2I1 65I3I1 60I 4I1 75IStatistical Operations Key Presses for Program Instructions ProgrammingProgramming the HP 30b Hold Programming Example HoldProgram Step Reassigning Menu Functions To a specific label Program Menu and Program EditingFollowed by a label number to go Use the following keystrokes to enter the program Tests and Jump FunctionsCreates label 03 in your program. You can Long Programs and Battery Life Sub-Function Call05003$1 Other Programming FunctionsDSE ISG , followed by 1 digitMessages Calculates the volume Debugging a ProgramSaving, Restoring, and Modifying Mode Settings L1hL1-L2= Hold SolveProgramming Error Messages Error Messages and Calculator StatusError Messages Status ER Unique solution to IRR Not Found Warranty, Regulatory, and Contact Information HP Limited Hardware Warranty and Customer CareReplacing the Batteries General TermsWarranty, Regulatory, and Contact Information Modifications Canadian NoticeAvis Canadien European Union Regulatory NoticeLow Voltage Directive 2006/95/EC EMC Directive 2004/108/EC Customer Care Contact InformationPerchlorate Material special handling may apply 香港特別行政區 Martinica 08 5199 Country/Region Contact Vietnam +65-6272-5300 Viêt Nam Zambia Warranty, Regulatory, and Contact Information Symbols Calendar Cash flowChecksum 78 Combinations Date Debugging 85 DecimalInsert and delete keys Interest Conversion Internal rate of return Investment Rate KeyKey presses Keyboard map and legend Language MarginMath On HP 30b ParenthesesPercent Calculation Percentages PermutationsRPN Stop 83 StoreThousands separator Time Value of Money
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30b Professional, 20b Consultant Financial specifications

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