North Park Secondary School

Computer Engineering 11 (ICE 3M0)

Experiment 3

4x4 Lab 3

Diagonally turning on the LEDs


Teacher's Name

Students' Names

Students' No.


PURPOSE:

  • To investigate the operation of a 4X4 LED Matrix using a program in VISUAL BASIC.
  • To turn on each LED diagonally at 2 sec intervals- repeated 5 times using address method.

  • MATERIALS:

    One SK-50 breadboarding socket
    Sixteen LED's
    Four 1 KOHM resistors
    Four Transistors
    Plenty of Wires
    One 9V Battery for testing
    Computer w/ access to the parallel port.
    Visual Basic Compiler


    CURCUIT:

       

    CODE:

    The source code

    PROCEDURE:

    1. Assemble the circuit on the breadboard according to the pictorial above.
    2. Create a program to turn on each LED diagonally at 2 sec intervals- repeated 5 times using address method. (use the source code above as an example).
    3. Run the Program.
    4. Contact the teacher when the 4X4 Matrix is up and running.

    OBSERVATIONS

    If the code you programmed was supposed to turn on each LED diagonally at 2 sec intervals- repeated 5 times using address method, did the program and LED Matrix work?
     Yes
     No
     Some of it
     Code?
     LED Matrix?
     Where am I?


    DISCUSSION

    1. When the address is Out p, 136 which LED does it turn on?
    2. At the end of the code what is necessary for turning off all the LED's?

    CONCLUSION

    Summarize what happened when you set up the code and LED Matrix.


    Page Lasted Updated 10:25 AM 11/25/2003

     

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