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The Datafile PD-CD 5
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DATAFILE_PDCD5.iso
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finance
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!Finance
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1996-07-19
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3KB
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73 lines
*****************************************************************************************
* *
* !Finance *
* Finance deal calculator *
* *
*****************************************************************************************
Written by: Glynn Snowden
Version : 3.00 (9th April 1996)
This application works with all versions of RISC OS.
Introduction
~~~~~~~~~~~~
Finance was my first real foray into WIMP programming. I had written numerous programs to run
outside the desktop, but this was my first desktop application. I hope someone out there will
find it useful.
How to use !Finance
~~~~~~~~~~~~~~~~~~~
Double-click on the icon in the directory viewer to load the program. The program will install
itself on the right-hand side of the icon bar. Clicking with SELECT or ADJUST over the icon
brings up the main window. Here there is a space to enter the initial amount, interest rate (as
a percentage), time to pay back (in months) and, if any, deposit (as a percentage). If you try
to calculate without entering values for the first three prompts you will get a message telling
you to enter the relevant information. Pressing RETURN with the caret on the screen will move
to the next section, and after the last one, calculate the amount.
The two radio buttons directly above the results window allow you to select the interest type.
Simple interest - Interest is only paid on the initial amount.
Compound interest - Interest is paid on the interest, as well as the initial amount.
The variable windows are not emptied after interest is calculated, or when the window is closed.
The icon bar menu gives information about the program, a calculator utility and the quit option.
The calculator layout is similar to the standard Acorn one supplied in ROM on RISC OS3 machines.
The main difference is that as you enter a sum it adds to the sum in the window, so you can
perform more than one step at a time. (This isn't a very good description, so try it yourself.)
NOTE: This program was written on an A3010 and has been tested on an A7000 so should be fairly universally workable.
History
~~~~~~~
V0.50
Initial test version.
V1.00
Basic program. As you see now but only simple interest and no deposit option.
V1.50
Added deposit section.
V2.00
Added compound interest.
V2.50
Calculator added.
V2.80
Bug fix - caret now replaces itself correctly if you miss out one of the pieces of information.
V3.00
Calculator now handles illegal sums correctly.
Glynn Snowden
8 St Margaret's Road
Knaresborough
North Yorkshire
HG5 0JS