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- ******Mortgage Calculator******
-
-
- V2.1 Copyright (c) 1985, 1986 PC Ware, Ed. Yentzen All rights reserved.
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- PC Ware, Post Office Box 47142, Dallas, Texas 75247, (214) 554 8695
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- Please share copies of this user supported program with others. Any suggestions
- for improving the Mortgage Calculator program or manual would be appreciated.
-
-
- Contents
-
- Introduction ............................................................... 1
- Installing and Starting Mortgage Calculator ................................ 2
- Basic Concepts ............................................................. 3
- Field Summary .............................................................. 4
- Function Keys .............................................................. 5
-
- Example solutions to common problems
-
- MORTGAGE (compound interest)
- Find: Monthly payment on a home loan ............................ 6
- Find: Down payment required on home loan ........................ *
- Compare the payments of a loan at four different interest rates . *
- Compare the payments of a loan at four different interest rates
- and with different Points required ............................ *
- Find: Monthly payment on a variable interest rate home loan ..... *
- Find: Monthly payment of an auto loan ........................... *
- Find: Term of second mortgage ................................... *
- Find: Annual interest of an owner financed loan ................. *
- Find: Balloon payment (pay-off amount) due on a home loan ....... *
- Find: Amount of your last scheduled payment & exact totals ...... *
- See the effect of an accelerated mortgage payment plan .......... *
- Display and print monthly payment schedule ...................... *
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- SIMPLE (simple interest)
- Find: The interest on a mortgage due at closing ................. *
- Find: The commission on the sale of a property .................. *
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- PVALUE (present value)
- Find: The savings from refinancing, at 5 years and at 30 years .. *
- Find: The value of minimum lease payments ....................... *
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- FVALUE (future value)
- Project the value of a house in 5 years ......................... *
- What is the value of a single investment at 5.25% for 20 years .. *
- What is the value of a single investment at 10% for 20 years .... *
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- ANNUITY (simple annuity)
- Find: How much your retirement fund will be worth after
- 20 years of monthly contributions ......................... *
- Find: The monthly deposits necessary to match a lump-sum
- payment due in 5 years .................................... *
- Compare: Two retirement plans ................................... *
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- Memory
- Find: The sum of the monthly payments on three loans ............ *
- Find: The selling price for a net sale .......................... *
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- Messages ................................................................... *
- Index ...................................................................... *
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-
- *Included in the registered users' printed manual
-
- Introduction 1
-
- Real estate financing analysis is quick and easy with Mortgage Calculator. It
- speeds you through the common problems of:
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- Compound interest (display and/or print payment schedules),
- Simple interest,
- Present values,
- Future values,
- Annuities,
- Variable interest rate,
- Odd payment amounts,
- Balloon payments (pay-offs), and
- Leases.
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- A single calculation screen contains:
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- Four independent calculators,
- All the calculation fields,
- A common memory value, and
- Online help.
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- With four side-by-side calculators you will be able to:
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- compare alternative solutions or
- combine different types of calculations into a single solution.
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- The online help and calculation screen provide the basic information you will
- need to get started. This manual is intended to help you expand your use of
- Mortgage Calclator.
-
-
-
- Program support
-
- Program support is provided to registered users. The registration fee of twenty
- five dollars ($25.00) gives you:
-
- 1. A printed manual with example solutions to common problems;
-
- and for one year:
- 2. All additions made to the Mortgage Calculator program and printed manual
- (including new example solutions); and
-
- 3. Technical and "how to" support by telephone or mail.
-
-
- Registered users, if you encounter a problem using Mortgage Calculator please
- contact us by telephone or by mail. We will need the following information:
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- Your registration number,
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- Your version of DOS, and
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- The type of hardware you have.
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- Installing Mortgage Calculator 2
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- To run Mortgage Calculator you will need the following:
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- Any IBM PC, PC-XT, PC-AT, or IBM compatible;
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- At least 128K bytes of memory;
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- PC DOS or MS DOS version 2.0 or greater;
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- Any color or monochrome monitor;
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- At least one diskette drive; and
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- Any printer having at least 80 print positions per line.
- (a printer is needed only for printing payment schedules)
-
-
- To install Mortgage Calculator
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- on a diskette system:
- Insert your original copy of Mortgage Calculator into drive A,
- Insert a formatted diskette into drive B, and type
- A: and press [ENTER]
- COPY MC.* B: and press [ENTER]
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- on a hard disk system:
- Insert your original copy of Mortgage Calculator into drive A and type
- C: and press [ENTER]
- CD\ and press [ENTER]
- MKDIR MC and press [ENTER]
- CD\MC and press [ENTER]
- COPY A:MC.* and press [ENTER]
-
- You should see the following files copied:
- MC.EXE - the Mortgage Calculator program,
- MC.HLP - the help text, and
- MC.DOC - this documentation text
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-
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- Starting Mortgage Calculator
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- To start Mortgage Calculator
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- on a diskette system:
- Insert your working copy of Mortgage Calculator into drive A and type
- A: and press [ENTER]
- MC and press [ENTER]
-
- on a hard disk system:
- type
- C: and press [ENTER]
- CD\MC and press [ENTER]
- MC and press [ENTER]
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- Basic Concepts 3
-
- The first screen you will see, after starting Mortgage Calculator, is the MC
- Logo screen. From this screen you can:
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- Press the End key to return to DOS or
- Press the [ENTER] key to display the calculation screen.
-
- The calculation screen is the second screen you will see. It contains four
- independent calculators arranged into four side-by-side columns. Each column
- contains all the fields you will need to solve any type of calculation. From
- this screen you will be able to:
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- compare alternative solutions;
- combine different types of calculations into a single solution;
- solve all types of calculations in a single calculation column;
- move freely from field to field up or down within a column;
- move freely from calculator to calculator left or right;
- copy the data in one column into the next column left or right;
- get help for the field at the cursor; or
- display and/or print a monthly payment schedule.
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- When the calculation screen is first displayed:
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- The cursor is positioned to "Original amount" in the first column;
- The fields in the first column are set to their default values; and
- The fields in the other columns are blank.
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- To calculate:
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- Move (see Function Keys) the cursor to a field,
- Input (see Field Summary) your value, and
- After the required values have been entered,
- Press the [=] key.
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- Each type of calculation requires that you input at least three numeric values.
- If nothing happens when you press the calculation key; make sure that you have
- input the minimum number of required fields for the chosen type of calculation.
-
- The calculation screen contains one additional calculation field. This is the
- Memory value. It is located on the top line and is displayed as a blank when not
- used. You can access the Memory value from any of the four columns. To use the
- Memory value:
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- Move the cursor to the input amount or percent you want to use;
- Press the Alt key (line 25 will contain a selection menu); and
- Press the key corresponding to the action you want.
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- At the bottom of the calculation screen, on line 25, is the status line. This
- line may contain:
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- A list of Function keys and their use (normal setting);
- A list of Memory keys and their use (if the Alt key is pressed);
- A list of the field's valid input (if a input error is made); or
- An informational message.
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- Field Summary 4
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- Field Input/Output Must be Default
- ******************* ************ ******************************* ***********
- Type of calculation* Input MORTGAGE,SIMPLE,FVALUE,PVALUE, MORTGAGE
- ANNUITY
- Compounding peroid Input ANNUALLY,SEMIANNLY,QUARTERLY, MONTHLY
- MONTHLY,DAILY360,DAILY365
- Original amount Input&Output 0 to 9,999,999.99
- Percent down Input&Output -99.999 to 99.999
- Down payment Input&Output 0 to 9,999,999.99
- Mortgage amount Input&Output 0 to 9,999,999.99
- Page Output 1 to 10
- Term (number) Input&Output 0 to 999
- (units) Input YEARS,MONTHS,DAYS YEARS
- Annual % rate Input 0 to 99.999
- Payment per period Input&Output 0 to 9,999,999.99
- Total amount Input&Output 0 to 9,999,999.99
- Total interest Output 0 to 9,999,999.99
- Total payments Output 0 to 999
- First payment date Input A valid date in MM/DD/YY format System date
- Balloon due date Output A valid date in MM/DD/YY format
- Balloon payment Output 0 to 9,999,999.99
- ******************* ************ ******************************* ***********
-
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- *"Type" Calculation Required input
- ******** ***************** **************************************************
- MORTGAGE Compound interest Mortgage amount, Term, Annual % rate, or Payment
- per period (any 3 of the 4)
- SIMPLE Simple interest Term, Annual % rate, and Mortgage amount
- FVALUE Future value Term, Annual % rate, and Mortgage amount
- PVALUE Present value Term, Annual % rate, and Payment per period or
- Total amount
- ANNUITY Simple annuity Term, Annual % rate, and Payment per period or
- Total amount
- ******** ***************** **************************************************
-
-
- Note:
- Lowercase letters are converted to uppercase letters as you type.
- Numeric values may be typed with or without commas.
- Dates may be input with or without "/".
- A Numeric field with a value of zero is displayed as blank.
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- Function Keys 5
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- Key Action
- **************************** ************************************************
- (For ALL screens)
- Esc Exit to the previous screen or to DOS
- End Same as Esc
- (For the active calculator)
- F1 Display help for the field at the cursor
- F2 Clear numeric values & reset:
- Type of calculation to MORTGAGE
- Compounding period to MONTHLY
- Term to YEARS
- First payment date to PC's current date
- F3 Display payment schedule
- F4 Print payment schedule
- F7 Move the cursor left one column
- F8 Move the cursor right one column
- F9 Copy left all the values in the active column
- F10 Copy right all the values in the active column
- [=] Calculate
- [ENTER], [TAB], [DOWN ARROW] Move forward one field (down the column)
- [SHIFT-TAB], [UP ARROW] Move back one field (up the column)
- [LEFT ARROW], [RIGHT ARROW] Move cursor within a field
- [BACKSPACE] Erase the last character typed
- PgUp Move forward one Term-%-Payment page
- PgDn Move back one Term-%-Payment page
- Home Move to the first field in the column
- Ins Insert character at cursor
- Del Delete character at cursor
- Ctl-End Erase to the end of field
- (For Payment Schedule screen)
- F4 Print payment schedule
- PgUp Move to the previous payment schedule page
- PgDn Move to the next payment schedule page
- (For the MEMORY value)
- Alt-A Add to MEMORY the value at the cursor
- Alt-S Subtract from MEMORY the value at the cursor
- Alt-M Multiply to MEMORY the value at the cursor
- Alt-D Divide to MEMORY the value at the cursor
- Alt-P Percent to MEMORY the value at the cursor
- Alt-C Clear MEMORY
- Alt-I Insert MEMORY into the field at the cursor
- **************************** ************************************************
-
- FIND: Monthly payment on a home loan 6
-
- Your are buying a $100,000 house, putting down 5% and financing the rest at 12%
- annual interest for 30 years. Excluding taxes and insurance what will be the
- monthly payments on your loan?
-
-
- Action Input
- ***************************************************************** ************
- 1 Select the compound interest type of calculation mortgage
- 2 Indicate the payment interval and compounding period monthly
- 3 Enter the price of the house you are buying 100000
- 4 Enter your percent down 5
- 5 In the first of these two fields enter the number and then the
- uints that make up the length of your loan 30 years
- 6 Enter the loan's annual interest rate 12
-
-
- ************************************************************************************
- ************************************************************* Mortgage Calculator **
- 1 * Type of calculation: MORTGAGE *
- 2 * Compounding period : MONTHLY *
- * *
- 3 * Original amount ...: 100,000.00 *
- 4 * Percent down ......: 5.00% *
- * Down payment ......: *
- * Mortgage amount ...: *
- * *
- * Page:01************* ************* ************* ************* *
- 5 * Term ..............:* 30 YEARS ** ** ** * *
- 6 * Annual % rate .....:* 12.000% ** ** ** * *
- * Payment per period :* ** ** ** * *
- * ************************************************************ *
- * *
- * Total amount ......: *
- * Total interest ....: *
- * Total payments ....: *
- * *
- * First payment date : 02/01/85 *
- * *
- * Balloon due date ..: *
- * Balloon payment ...: *
- * ******************************************************************************** *
- * Esc=End F1=Help F2=Clear F3=Dsply F4=Prnt F7/F8=Move F9/F10=Copy [=]=Cal. *
- ************************************************************************************
- Input display screen
-
-
- Press the [=] key to calculate.
- 7
-
- Solution Output
- ***************************************************************** ************
- 1 Your monthly payment will be 977.10
- 2 Your down payment will be 5,000.00
- 3 Your loan amount will be 95,000.00
- 4 Total paid after 360 payments 351,784.80
- 5 Interest paid after 360 payments 256,784.80
- 6 Over 30 years you will make 360 payments
-
-
- ************************************************************************************
- ************************************************************* Mortgage Calculator **
- * Type of calculation: MORTGAGE *
- * Compounding period : MONTHLY *
- * *
- * Original amount ...: 100,000.00 *
- * Percent down ......: 5.00% *
- 2 * Down payment ......: 5,000.00 *
- 3 * Mortgage amount ...: 95,000.00 *
- * *
- * Page:01************* ************* ************* ************* *
- * Term ..............:* 30 YEARS ** ** ** * *
- * Annual % rate .....:* 12.000% ** ** ** * *
- 1 * Payment per period :* 977.18 ** ** ** * *
- * ************************************************************ *
- * *
- 4 * Total amount ......: 351,784.80 *
- 5 * Total interest ....: 256,784.80 *
- 6 * Total payments ....: 360 *
- * *
- * First payment date : 02/01/85 *
- * *
- * Balloon due date ..: *
- * Balloon payment ...: *
- * ******************************************************************************** *
- * Esc=End F1=Help F2=Clear F3=Dsply F4=Prnt F7/F8=Move F9/F10=Copy [=]=Cal. *
- ************************************************************************************
-
- To recalculate the monthly payment at 10%:
-
- 1. type zero into the "Payment per period" field,
- 2. type 10 into the "Annual % rate" field, and
- 3. press the [=] key.