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Software Vault: The Diamond Collection
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FOURPROG.TXT
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1995-01-15
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Four Programs
There are four programs on this disk which may assist you
to a better understanding of loans. They are called HIFI,
INTCALC, MOPAY, and RULE78. Any of these four programs
can be run from the menu or by typing its name at the DOS
prompt.
If you want to break out of a loop when running any of
these programs, pressing Q + ENTER will do it in most
cases. If not press CONTROL-C or CONTROL-BREAK.
The financing of automobiles and houses is nearly always
done with amortized loans. This is a type of loan which
is paid off in equal monthly payments. The amortized loan
equation is covered in another chapter.
_________________________________________________________
HIFI is a mortgage lister for amortized loans which
allows you to examine a mortgage listing on the screen or
print it on your printer. Try it with your own mortgage
or car loan. HIFI will handle larger amounts than most
programs of its type. The maximum depends on the
combination of interest rate and term.
_________________________________________________________
INTCALC, as you may have guessed, calculates the annual
interest rate (a.k.a. Annual Percentage Rate or APR) of
an amortized loan when you input the Amount Financed,
Term, and monthly payment. How could such a program be
useful? Read "How Not to Buy a Used Car."
_________________________________________________________
MOPAY calculates the monthly payment and total interest
for amortized loans when you input the Amount Financed,
Term, and APR.
_________________________________________________________
RULE78 calculates the percentage of interest the lender
will rebate if you pay off a loan before maturity. The
answer is given as percentage of what the interest would
have been if the loan had remained in effect until
maturity.
This is not for amortized loans, because the payoff for
those loans is calculated by the equation each month.
The Rule of 78's is generally used for short term loans
of the Add-On interest type.
One caution is to be observed when using RULE78. Interest
is almost always stated as a whole number, and RULE78
follows this convention. The output of RULE78 may be, for
example, a whole number such as 12 or a whole number and
a decimal such as 12.5. These are read as 12 percent or
12 and a half percent. These numbers must be divided by
100 before they can be used to calculate interest. This
changes them to .12 and .125 respectively
Sometimes the output of RULE78 might be a number such as
.12, which should be read as twelve one-hundredths of a
percent. When this is divided by 100 it becomes .0012. A
huge error would result should you mistake an output of
.12 as being twelve percent instead of 12 one-hundredths
of a percent.
_________________________________________________________
CAUTION: If you plan to pay off a loan before maturity,
always call the bank or mortgage company in advance.
There may be a penalty for early payoff, or there may be
bank charges added to the principal balance.
_________________________________________________________
NOTE ABOUT PRINTING:
For the programs named INTCALC, MOPAY and RULE78, the
output from each takes only a single screen and can be
printed, if desired, with the Prt-Scr key. The output
from HIFI, however, can cover many pages. If you select
the PRINT option of HIFI, it will print on most printers,
daisy wheel or dot matrix, without any problem. To make
it do this, I simplified the code to the point where the
user must advance the paper to the top of the next page
when the previous page has finished printing. The program
pauses and prompts you to do this.
Some of the newer printers have some features which may
conflict with the on-screen instructions of the CAR B/S
program:
FORM FEED If you are using single sheets and have this
option turned on, it ejects the current page. If you are
using fanfold paper, it feeds to the top of the next
page.
TEAR-OFF This option advances the bottom perforation in
fanfold paper several lines past the printhead to a
tear-off bar. Any key press after this moves the top line
of the next sheet back to the printhead.
If either of the above options are turned on and cause a
problem, turn them off.
TOP OF FORM Another feature of many printers is that they
set the top of the page (Top of Form) to the line at the
printhead when the printer is turned on. It is good
practice to prepare for printing by adjusting the paper
so the top line of the paper is at the printhead before
you turn the printer on. If the printer has been turned
on previously, turn it off, adjust the paper, and turn it
back on.
_________________________________________________________
End