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Moving message diplay using PC

Discussion in 'Electronic Projects Design/Ideas/Reviews' started by syed, Feb 19, 2008.

  1. syed

    syed New Member

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    hai ,

    i am doing project on "moving message display" using pc.The display i am using is 5*7 dot matrix display.

    Thats, pc, parallel port and dotmatrix,

    i have developed the code for this in 'C' language...

    i need schematic diagram for display board..

    will youplease anyody help me...


    syed
  2. Binu

    Binu Administrator

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    How many displays you want to connect (i.e whats the length of the Columns)
  3. syed

    syed New Member

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    i want to develop initially for 12 characters../

    that means 12 5*7 mtrixes

    syed
  4. Binu

    Binu Administrator

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    I cant give you the full circuit, and i have posted a similar circuit in some other topic. Search it. You start to design and post your doubts here so that i can help you.
  5. ihtashan

    ihtashan New Member

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    hi sir!
    i am intrested in this project sir i use shift registers 74164 for data and 74145 decoder use for rows with b772 pnp transistor isir i m confuse in refresh rate and
    and charachter display on it
    let there are 35 leds(5*7) led having cathode and anode frome where it get anode signal and where it get cathode signal, the data apply through shift registers which r connected to columns
    sir i am waiting for ur reply thanks

    shani`s
  6. Binu

    Binu Administrator

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  7. A Maajeed

    A Maajeed New Member

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    I need to write some other language instead of english like arabic so i need to do it with key board or any other way (circuits etc) on dot matrix but idonot know how to doit i have protieus, and keil assambler, if i will get aa schematec and sourc code i m able to make it
    thank you
    AMaajeed
  8. Binu

    Binu Administrator

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    you have to do it, search the forum for the circuit of moving message display and try to make your own code on it.
  9. ehico16

    ehico16 New Member

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    pls can somebody help me with pc keyboard led scrolling circuit and software
  10. Binu

    Binu Administrator

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    Search the forum for the circuit.
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