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