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README.TXT
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1990-09-15
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September 15, 1990
Public Brand Software
3750 Kentucky Ave.
Indianapolis, IN 46241
Greetings,
Although I have yet placed only one or two orders, I
have long enjoyed both your catalog and the service that you
provide. I hope you find the submissions on this disk
suitable for inclusion in your Shareware library.
Besides this README.TXT file, four self-contained,
distributable files are also enclosed on this disk, each in
the ZIP file archive format. The four programs are:
MORSE-21
MORSE (version 2.1) is a program for the IBM PC and PC
compatibles that teaches its users the International Morse
Code representation of characters by repetitively drilling
them in a "flash-card" manner. A total of 46 characters
have been incorporated; the letters A - Z; the digits 0 - 9;
and the following punctuation marks: period, comma, question
mark, colon, semicolon, apostrophe, hyphen, parenthesis,
slash, and the underline mark.
555TIMER
Because of its low cost, durability, and ease of use,
the 555 timer is one of the most widely used chips by
electronic hobbyists. This program performs two types of
calculations for 555 trimmers operating in their oscillating
mode. It can either (1) calculate the necessary external
components to produce a given output or (2) it can calculate
the resulting output from a given set of external
components.
DELTA-Y
While the equations associated with the Delta-Wye
transformation are not necessarily difficult, they can be
time consuming to locate and then calculate. This program
places the results of such calculations at your fingertips.
Just enter the values of resistances in a delta
configuration and the program will display the component
values for the corresponding wye configuration, or visa
versa.
LINEREGR
When is a straight line not a straight line? This
program can find the answer. It allows the user to input a
set of data and then, using the Linear Regression algorithm,
calculates the slope and intercept of the line that best
fits the data. The program also calculates the "correlation
coefficient," a number that describes how well the data can
be estimated by the calculated straight line.
Thank you (in advance) for adding these programs to
your archive. Any advice you could give on future versions
or programs would be greatly appreciated.
Sincerely,
James E. Tarchinski
(aka Aurora Software)
2860 Pine Knoll #200D
Auburn Hills, MI 48326