how to Controlling 4 7-segment displays

Discussion in 'Embedded Systems and Microcontrollers' started by kamalsolimen, Oct 26, 2014.

  1. kamalsolimen

    Thread Starter New Member

    Oct 3, 2014
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    how to Controlling 4 7-segment displays use 4511 and pic16f877a

    how can it use 1 4511 decoder
     
  2. MrChips

    Moderator

    Oct 2, 2009
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    You can drive all seven segments from the same decoder/driver using time multiplexing technique. Only one digit is selected at any one time.
     
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  3. ErnieM

    AAC Fanatic!

    Apr 24, 2011
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  4. kamalsolimen

    Thread Starter New Member

    Oct 3, 2014
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    yes i understand the idea to show 3 digit 7 segmant its on/off Respectively very fast

    question : whats diffrent bettowen ic 4511 and 7447
     
  5. ScottWang

    Moderator

    Aug 23, 2012
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    767
    CD4511 -- CMOS, just need a little current itself.
    74LS47 -- TTL, need more current itself.
     
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