A Simulation of Directional Lights Circuit Final Project ICS665

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A Simulation of Directional Lights CircuitFinal
Project ICS665

• Members
• Astrid Tomsic
• Dan Yi
• Frank Tien

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Outline

• Simulation of Directional lights circuit
• What the Circuit can do
• Picture of a Circuit Board
• A Closer Look at an EPROM and Flip Flop
• GUI interface (Screen shot)
• System Analysis Phase
• Improvements to the Design
• Use Case Revision
• Scenario Revision
• Implementation Phase
• Software Structures
• Documentation
• JavaDoc
• Run Procedure Problem
• Conclusion

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Simulation of Directional Lights Circuit
What the Circuit can do

• The circuit simulation consists of three parts
• A switch that users can control in the GUI
  interface.
• 4 Lights (LEDs) that show the result in the
  simulated circuit.
• A slider that adjusts the resistance in the
  circuit, causing the frequency of the lights to
  increase or decrease.
• 2 Registers a flip flop and an EPROM.
• A multimedia demo that explains the elements of
  the circuit and how it works.

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Simulation of Directional Lights Circuit
Picture of a Circuit Board
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Simulation of Directional Lights Circuit A
Closer Look at the EPROM and Flip Flop
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Simulation of Directional Lights Circuit
GUI Interface (screen shot)
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System Analysis Phase Improvements to the Design

• To better meet our objectives of introducing
  students to the basics of a directional lights
  circuit and showing them that circuits can be
  fun, we chose to implement the following
• A slider that allows the user to adjust the
  frequency of the lights. This simulates how
  resistance can effect the circuit.
• Added better labeling to the user interface to
  help the student identify each component.
• Added a new ClockView for the slider.
• Filmed a live circuit for the video demo with an
  audio commentary.

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System Analysis Phase Use Case Revision

• An additional operate frequency slider has been
  added where students can change the speed of the
  directional leds (simulating resistance). This
  enables students to see how operating the switch
  and adjusting the resistance changes the state of
  the lights.

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System Analysis Phase Scenario Revision

• Use Case
• Run circuit
• Participants
• Student
• Web browser
• Main Scenario
• Student launches web browser
• Student navigates to web site where applet is
  located
• System displays the video and circuit
• Student launches the video
• System plays the video
• Student clicks the switch on the circuit
• System shows lights going on continuously one by
  one from left to right
• Student adjusts the slider
• System shows lights going on faster or slower
• Student clicks switch again on the circuit
• System shows lights going on continuously one by
  one in the opposite direction
• Alternative Scenario 1

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Implementation Phase Software Structures

• Software patterns were used when implementing the
  system. They helped us to develop code that is
  well structured and cohesive. We found that as
  designers, relating to software patterns in our
  discussions made our communication more
  efficient. We used the following patterns in the
  design
• Observer pattern
• Main class triggers the interface and starts to
  listen for events that will notify a class when
  an event (e.g. switch clicked or slider adjusted)
  takes place.
• State pattern
• Tells the circuit if the switch is open or
  closed.
• Strategy pattern
• Used to determine the direction of the LEDs.
• Factory patterns
• Used to create the 4 LEDs.
• Iterator
• Tells the circuit which light should be on or
  off.

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Documentation JavaDoc

• The documentation for the circuit can be found in
  the Javadoc located with the applet. We have
  included configuration steps to enable the source
  code to be compiled and run in the Jbuilder
  environment.

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Documentation Run Procedure Problem

• We programmed the applet in Jbuilder. It compiles
  and works well when we run it.
• We can view the applet in the Jbuilder viewer.
  However, we cannot make it work after we embedded
  it into a html page. The applet can be loaded but
  cannot be initialized.
• We think there might be two problems in our code
  
• We should use swing instead of AWT
• There might be something wrong with our xml code
  that defines the user interface.

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Conclusion

• Incorporating software patterns in our design
  helped us as designers to improve the quality of
  the code and they helped us to make modifications
  much more efficiently. They also served to
  improve discussions on the software design
  because we could mention a pattern name and it
  would allow us to envision how the code would be
  structured.
• By completing each of the software design phases,
  we were able to build better quality software.
  Each phase built on the previous phase but we
  also found it invaluable to be able to go back
  and modify some of our earlier assumptions and
  ideas as we found new and better ways to do
  things.
• We envision that our simulation of a directional
  digital circuit can be used to to increase
  students understanding of how basic circuit
  works and encourage them to explore further
  topics in digital circuits.

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Questions and Future Improvements

• Enhance GUI functionalities (e.g. addition of
  color movement of the switch different color
  LEDs).
• Increase circuit functionality (e.g. addition of
  more complex circuit components to show their
  interaction).
• Improve the application level design.
• Improve multimedia capability (e.g. additional
  multimedia resources).