                        CRESCENT MULTIMEDIA SYSTEMS                  3.00
                               P.O. Box 7183            
                          Victoria, Texas 77903

                       Sept. 6th. 1993  (Labor day!!)


   Dear Users:

   Hello and thanks for trying our software.  I hope you have an educational
   experience using the introductory module to DC electronics. We enjoyed
   creating it, and I am looking forward to hearing your comments on the
   module.

   NOTE: You will need VGA color to run this program.
   
   DC1 was released to the public domain on April 11th. 1993 by Crescent
   Multimedia Systems of Victoria, Texas. All code and images remain the 
   property of Crescent Multimedia Systems, but may be used by the general
   public for non-commercial use, without cost or warranty. 
   The software (DC1.ZIP) may be freely copied, enjoyed, and further
   distributed provided the two requested steps (later in this file) are
   followed.

   Crescent Multimedia, has finished the 17 module DC electronics course,
   and now offers all 17 modules for the price of $38.00.  The 17 modules
   will provide many (perhaps hundreds) of hours of study and enjoyment.
   
   In 1994, we will finish the 17 AC electronic modules, and you will be
   notified when they are available.  When finished, Crescent Multimedia will
   have complete courses in AC / DC / Solid-State, and digital electronics.
   Most of these modules will be 0.5 to 1 megabyte in size.  Unlike some
   commercial CAI (Computer Aided Instruction) modules, our modules will have
   some "beef" to them.  It really isn't possible to adequately learn
   electronics without using math and some simple algebra.  None of our
   modules teach by using just "Pretty Pictures". In fact, four DC modules
   are devoted to math, algebra and using a calculator.
   
   All modules contain user interaction, reviews, quizzes, and a final test.
   Additional features include graphics animation, looping back, and user-
   paced instruction.  All modules can run in a "stand alone" mode or from
   a floppy, but we suggest you use the menu driven interface and a hard
   disk.  All modules require a VGA monitor, but will run on most IBM
   compatible computers.  The modules can be shipped on 5 1/2 inch
   and 3 1/4 inch high density floppies as well as 3 1/4 inch low density
   floppies.  Sorry, but the modules are too large for low density 5 1/2
   inch floppies.

   Loading DC101.zip
   Copy the DC101.ZIP file to your hard disk. You could name the directory
   DC1 if you like.  Unzip the DC101.zip file, and you should have seven (7)
   new files.  Run the DCMENU.EXE file to start the program.
   Please note that only module DC1 (Atoms and Electrons) and the information
   selections are active on the menu.  When ordering the complete set of
   17 modules, DC101.ZIP will be replaced with every thing active.
   Please note that DC1 is a DOS program, and will not run in windows.
   ENJOY !!

   If you are posting our DC1 module to an electronic bulletin board, we
   have a couple of special requests:

   First:
   If you are uploading this release to a bulletin board, please 
   use "DC101.ZIP".

   Second: 
   If some of the files are missing, the programs will not work properly.
   Please make sure that the DC101.ZIP package you share via bulletin
   board or diskette contains all of the following 7 files, which together
   constitute the complete Version 1.01 release:


     *  README.1ST         The message you are reading now.
     *  ORDER.TXT          Prints out your comments and / or orders.
     *  DCMENU.EXE         The DC electronic menu program. 
     *  DC1.EXE            The introduction program. (Atoms and Electrons)
     *  INFO.EXE           Information file.        
     *  INFO2.EXE          Another information file.
     *  File_id.diz        Software identification and description file

   Thank you for your interest in our electronic CAI modules.  
   If you would like to comment via CompuServe, address mail to 73211,3617

                                    Sincerely,

                                    Dennis M. De Laurier


   The following is a listing of the DC and AC modules (descriptions follow).

   DC electronics course
   _____________________


   Module Description
   __________________

   1      Atoms and Electrons.
   2      Volts / Current / Resistance
   3      Numbers greater than one. Scientific and metric notation.
   4      Numbers less than one. Scientific and metric notation.
   5      Resistor Color codes
   6      Using the calculator in electronic calculations.
   7      Ohms Law and Power
   8      Series Circuits
   9      Parallel Circuits
   10     Series / Parallel Circuits
   11     Voltage Dividers
   12     Kirchhoff's Law
   13     Advanced DC Circuit Analysis.
   14     Capacitors / RC Time Constants.
   15     Introduction to Magnetism
   16     Inductors and L/R Time Constants
   17     Volt / Ohm / Amp  Meters


   AC electronics course  (available in 1994)
   _____________________

   Module Description 
   __________________

   1      Alternating Current
   2      Generating AC
   3      AC Values
   4      Non-sinusoidal Waveforms
   5      AC Measurements
   6      AC Meters
   7      Resistive AC circuits
   8      Capacitance and Capacitive Reactance
   9      C and RC circuits
   10     RC Filters
   11     Solving Right Triangles
   12     Inductance and Inductive Reactance
   13     RL Circuits
   14     Tuned Circuits, Q and Bandwidth
   15     RLC Circuits
   16     LC Filters
   17     Transformers




   DC MODULE DESCRIPTIONS:



   DC Module 1: ATOMS AND ELECTRONS
   _________________________________

   Module description

   This introductory module covers the basic atomic makeup of the
   atom, and its function in the generation of electrical voltage
   and current.  Concepts like electrostatic effects, polarity,
   current flow, ions, conductors and insulators are covered in
   depth. basic batteries and voltage sources are discussed.



   DC Module 2: Volts / Current / Resistance
   _________________________________________

   Module description

   This module introduces the basic concepts of voltage, current
   and resistance. Resistors and factors affecting resistivity are covered.
   Dry and wet cells are covered as well as series and parallel connections.
   Conductivity is also discussed.



   DC Module 3: Numbers greater than one
   _____________________________________

   Module description

   This module introduces the student to scientific and metric
   notation as it is used in the electronics industry. The module
   covers the metric range of Kilo, Mega, Giga, and the treatment
   and conversion of numbers falling in this range. The student is
   also introduced to scientific notation conversion of these same
   numbers. Converting back to decimal is also covered.



   DC Module 4: Numbers less than one
   __________________________________

   Module description

   In this module, the student is exposed to metric and scientific
   notation as applied to numbers less than one. This module
   covers the milli, micro, nano and pico metric range, as well as
   scientific notation conversion of numbers falling in this range.
   Again, converting back to decimal is covered.



   DC Module 5: Resistor Color Code
   ________________________________

   Module description

   Resistor color codes, resistor types and low value resistors are
   examined in this module. Resistor types and power are also
   covered.



   DC Module 6: Using the scientific calculator
   ____________________________________________

   Module description

   This module covers the scientific calculator as used in making
   electronic calculations.  This module prepares the student
   for solving problems in later modules.



   DC Module 7: Ohms Law and Power
   _______________________________

   Module description

   Ohms law and power in simple circuits are covered in this module.
   Calculator examples are shown with most problems.



   DC Module 8: Series Circuits
   ____________________________

   Module description

   This module examines series circuits, voltage drops, current, power
   and an introduction to Kirchhoff's voltage law.  Calculator
   examples are given for most problems.



   DC Module 9: Parallel Circuits
   _______________________

   Module description

   This module covers parallel circuits, voltage drops, current, and
   power.  Kirchhoff's current law is also discussed.  Calculator
   examples are given.



   DC Module 10: Series Parallel Circuits
   ______________________________________

   Module description

   Students use their knowledge from previous modules in this series
   parallel module.  This module combines and uses Kirchhoff's
   voltage and current laws to solve basic series parallel
   circuits.  Voltage loops, and current nodes are covered in detail.
   Power and calculator examples are also included.



   DC Module 11: Voltage Dividers
   ______________________________

   Module description

   Loaded and unloaded voltage dividers, bridge circuits, and the
   concepts of opens, shorts and voltage references are all part of
   this module.



   DC Module 12: Kirchhoff's Law
   _____________________________

   Module description

   Kirchhoff's law is introduced, as it is applied in dual source
   voltage circuits. The entire module deals with only these
   problems.



   DC Module 13: Advanced DC Circuit Analysis
   __________________________________________

   Module description

   This advanced module covers voltage and current sources,
   Superposition solutions, and Thevenin's and Norton's Theorem.



   DC Module 14: Capacitors and RC Time Constants
   ______________________________________________

   Module description

   Capacitor concepts, construction and types of capacitors are
   covered.  The module also covers the units of capacitance, and
   resistive capacitor time constant circuits.



   DC Module 15: Introduction to Magnetism
   _______________________________________

   Module description

   Topics like magnets, lines of force, magnetic materials, and the
   theory of magnetism are included.  In addition, generating
   magnetic fields, the left hand law, and magnetic quantities are
   covered.



   DC Module 16: Inductors and LC Time Constants
   _____________________________________________

   Module description

   Self inductance, inductors, time constants, the units of
   inductance and series and parallel inductors are all part of this
   module.



   DC Module 17: Volt / Ohm / Amp Meters
   _____________________________________

   Module description

   This module covers the use of these three types of meters, and
   their construction.  Meter movements, voltage multipliers and
   meter shunts are covered in detail.


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