HP 20B - Manual

Basic Features 7 1 Basic Features Welcome to the HP 20b Financial Calculator This manual is designed to familiarize you with the many features of your new 20b Financial Calculator. It includes menumaps, example problems and solutions with key presses, screen shots, and examples of cash flow diagrams...

Basic Features 8 Two Line Display There are two lines in the display screen as shown in Figure 1. Figure 1 Display Screen The top line of the screen displays operation status, operator symbols, annunciators, and abbreviations of the registers,variables, and menu names. Throughout this manual, this l...

Basic Features 10 Table 1-1 Mode Menu Settings Setting (top line) Description English, Français,Deutch, or Español Language setting for the messages displayed on the screen.Default is English . Pressing I cycles through these options. Actual orCal.360 Calendar options for bonds and date calculations...

Basic Features 11 Key Presses and the Secondary Function : Key To execute the function associated with a key, press and release the desired key. Most of the 20b's keys have two functions:the primary function and the secondary function. The primary function is printed on the top of the key. The secon...

Basic Features 14 For more information about storing and recalling numbers, refer to the section titled, Storing and Recalling Numbers in Chapter 2. The Cash Flow and Statistics menus share the same memory and are limited to a combined total of 50 memory slots. Thenumber displayed with Memory refers...

Mathematical Calculations 16 2 Mathematical Calculations Mathematical Functions Mathematical functions are located:  On keys, such as, +-*/ , etc.  On shifted, or secondary functions, such as, :p  In the Math menu, :s Number Entry and Display Numbers are entered by pressing:  Numbered keys, 0 - ...

Mathematical Calculations 17 Chain Mode Calculations in Chain mode are interpreted in the order in which they are entered. For example, entering the followingnumbers and operations as written from left to right 1+2*3= returns 9. See Figure 2. Figure 2 Calculation in Chain Mode Note: if you press an ...

Mathematical Calculations 18 For example, key in 1+ 2 x 5 nPr2 2 in Algebraic mode by pressing: 1+2*5:b2:m= . The result is 241. Note: the calculator is limited to 12 pending operations. An operation is pending when it is waiting for the input of a number or the result of an operation of higher prio...

Mathematical Calculations 22 Figure 6 The RPN Stack and the Roll Down Operation Pressing ) performs a swap. A swap operation exchanges the numbers on Levels 1 and 2 of the stack. The ) key has a small symbol on it as a reminder of the swap feature. With the numbers entered into the stack shown in th...

Mathematical Calculations 23 For example, to calculate 6 , press 6:n . The result of 2.45 is calculated immediately and displayed on the bottom line. The square root symbol ( ) appears on the top line. Note: before doing any trigonometric calculations in the Math menu, check whether the angle mode i...

Mathematical Calculations 25 Table 2-5 Math Menu Example Keys Display Description .5I:s Enters 0.5 and opens the Math menu starting with Trigonometry . I< Selects the Trigonometry sub-menu and scrolls to Sin-1. Note the value for Sin-1 is calculated immediately anddisplayed. I or = Validates the ...

Mathematical Calculations 27  nCr  nPr Y x is the power function, nCr stands for the number of combinations of n items taken r at a time, and nPr stands for the number of permutations of n items taken r at a time. Combination=   ! ! ! r n r n  Permutation=   ! ! r n n  Perform calculations w...

Mathematical Calculations 28 press L2 to recall memory 2. Note how the new current value 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...

Time Value of Money 30 3 Time Value of Money The examples in the following sections are calculated with the Mode menu preferences in their default settings, unlessotherwise noted. For more information about basic features and setting preferences, see Chapter 1 , Basic Features. Time Value of Money (...

Time Value of Money 32 To save values for the TVM variables, enter the desired number, followed by the corresponding TVM key. To calculate anunknown value, enter all known values and press the key of the item you want solved. Table 3-1 TVM Keys Keys Description N Stores or calculates the number of p...

Time Value of Money 33 Table 3-2 TVM Example Keys Display Description M Returns the monthly payment. This result is negative (-); it ismoney you pay out. To reset the TVM variables to their default values, with any TVM variable displayed press :x . Press < or > repeatedly until TVM displays. P...

Time Value of Money 34 Enter the values for the TVM keys for the example below. Press A followed by < or > to view the amortization schedule. Creating an Amortization Schedule You borrow 140,000.00 for 360 months at 10% interest. Create an amortization schedule for the loan. How much interestd...

Time Value of Money 35 To reset the menu items to their default values, with any item of the Amortization menu displayed press :x . With TVM displayed, press I . At the TVM Reset prompt, press I to reset, or O to cancel . Interest Conversion Menu Figure 3 The Menu Map for the Interest Conversion Men...

Time Value of Money 36 Table 3-6 Interest Rate Conversion Example Keys Display Description 365I Inputs 365 as the value for the number of compounding periods per year. >= Scrolls to the variable for the effective rate and calculates it. A36.5% nominal rate compounded daily equals an effectiverate...

Cash Flows 39 4 Cash Flows Figure 1 Cash Flow Diagram In the calculator, a cash flow list is a set of numbered pairs, CF(n) and #CF(n), where n is the index of the cash flow list. Each pair represents one or more cash flows in a cash flow diagram. As with TVM problems, it helps to sketch a cash flow...

Cash Flows 40 To erase a cash flow list, with any cash flow displayed press :x . The number of cash flows in the list is displayed on the bottom line, along with Cash Flow=. At this prompt, press I . You will be asked to confirm your choice. Either press I to confirm the reset, or O to cancel. Table...

Cash Flows 42 Table 4-2 Cash Flow Example Keys Display Description 115000I Inputs 115000 as the monetary value of CF(6). Displays the current value, 1 , for the number of times CF(6) occurs. I Accepts 1 as the number of occurrences for CF(6). Analyzing Cash Flows The various functions used to analyz...

Cash Flows 44 Table 4-4 NPV and IRR Example Keys Display Description < Displays the number of periods required for the cash flow torepay the investment. << Scrolls to the total value of the cash flow. R Displays the IRR for the cash flow. Editing Cash Flows In the cash flow list, you can vi...

Cash Flows 45 Sample Cash Flow Diagrams Figure 3 Sample Cash Flow Diagrams

Bonds 46 5 Bonds B Set.Date Mat.Date CPN% Call Yield% Price Accrued Actual/ Cal.360 Annual/ Semi- annual DWN DWN DWN DWN DWN DWN DWN DWN DWN Figure 1 The Menu Map for the Bond Menu The Bond Menu Before you enter the Bond menu, be sure to verify the date format is set appropriately for your problem. ...

Date Calculation 49 6 Date Calculation Figure 1 The Menu Map for the Date Calculation Menu The Date Calculation Menu The Date Calculation menu is used to calculate the number of days between two dates, or a second date given a number of days from an initial, or final date. To open the Date Calculati...

Business Problems 53 8 Business Problems Figure 1 The Menu Map for the Percent Calculation (%calc) Menu The Percent Calculation Menu Press :# to open the menu. There are four items in this menu: markup as a percentage of cost ( Mkup. %C ), markup as a percentage of price ( Mkup. %P ), part as a perc...

Business Problems 54 Note: for business problems, margin is based on price; markup is based on cost. The examples below are shown with RPN asthe active operating mode. Percent Calculation Examples See Tables 8-1 through 8-4 for examples of calculations in the %calc menu. 1. Find the markup on an ite...

Depreciation 56 9 Depreciation Figure 1 The Menu Map for the Depreciation Menu The Depreciation Menu Press :\ to open the Depreciation menu. To select a depreciation method, press I repeatedly. See Figure 1. Input the values required for the calculation:  Asset life  Starting date or month of the ...

Depreciation 58 Table 9-2 Depreciation Menu Items Item Description Salvage The salvage value of the asset at the end of its useful life. Factor The declining balance factor as a percentage. This is used fordeclining balance and declining balance crossover methods only. Year Year for which you want t...

Statistical Operations 60 10 Statistical Operations Figure 1 The Menu Maps for the Data and Statistics Menus

Statistical Operations 61 The Data and Stats Menus Statistics analysis functions are located in the Data and Statistics menus accessible with the :y and :z keys. See Figure 1 for assistance with navigating through the menus. Press :y to open the Data menu. In this menu, enter a list of x values for ...

Statistical Operations 63 Table 10-1 The Statistics Menu Items Menu Item Description Sigma Y The sum of the y values. Sigma X 2 The sum of the squares of the x values. Sigma Y 2 The sum of the squares for the y values. Sigma XY The sum of the products of the x and y values. Statistics Example Sales ...

Errors 65 11 Errors Error Messages and Calculator Status Table 11-1 Error Messages Error Message Status ER: Underflow The calculation generated an underflow (result of 0). ER: x/0 Division by zero. ER: 0/0 Zero divided by zero. ER: ∞ *0 Infinite multiplied by zero. ER: ∞ / ∞ Infinite divided by infi...

Warranty, Regulatory, and Contact Information 67 12 Warranty, Regulatory, and Contact Information Replacing the Batteries Use only fresh batteries. Do not use rechargeable batteries. The calculator takes two, 3-volt CR2032 lithium batteries. Toinstall a new battery: 1. With the calculator turned off...

Warranty, Regulatory, and Contact Information 68 Customer Care In addition to the one year hardware warranty your HP calculator also comes with one year of technical support. If you needassistance, HP customer care can be reached by either email or telephone. Before calling please locate the call ce...

Warranty, Regulatory, and Contact Information 71 Product Regulatory & Environment Information Federal Communications Commission Notice This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. Theselimits are designed t...

Index 74 Index ! !: key, 23 % % change, 53 % yield, 47 = =: key, 12 A a: slope, 62 absolute value. See Math menu Algebraic mode, 17 amortization: Amort key, 33; example, 34; menu items, 33 annual: bond, 47 annunciators, 11 ANS. See last number B b: y-intercept, 62 backspace key, 16 balance: amortiza...