Understanding seven segment displays

in skills by Ian | 2 comments

John Park at Make has a really nice introduction to 7-segment LED displays and reverse engineering. He maps the relationship between bits in a byte and each LED segment connected to an SAA106 driver.  This is a real-world introduction to the tedious art of poking at hardware to reverse engineer a circuit.

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Comments

  1. Adnan says:

    I want to use 7 segment display to display voltages from 0 to 5V range with upto 2 decimal places using pic controller.
    can any one help me how to write the C code for the display..

    Regards

    Adnan

  2. Bo :o) says:

    Hi. If the purpsoe of your project isn’t to learn how to program a pic you will find some cheap 7 segment panel meters on ebay very cheap.
    If have a couple of them and they are quite precise.
    If it´s a project to learn programming you might wanna check out arduino.cc, of course this is another hardware but you will find a lot of example code.
    Bo :o)

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