help plz

Discussion in 'Homework Help' started by shetos13, Dec 21, 2008.

  1. shetos13

    Thread Starter New Member

    Dec 21, 2008
    5
    0
    i have problem
    i have A/D converter that convert anloge input to 8 bit
    input analog come from voltage divider variable circuit that input 12volt alwas and it output with range of 0 to 12volt
    i need to know that what the analog voltage input to A/DC from output of A/DC that preduce that output without using D/AC
    i convert the output to BCD .... can tell me how i know the input voltage from BCD value that i have??????????????
     
  2. beenthere

    Retired Moderator

    Apr 20, 2004
    15,815
    282
    Your post is very hard to follow. Especially this:

    i need to know that what the analog voltage input to A/DC from output of A/DC that preduce that output without using D/AC

    The colors don't help much, either.

    An 8 bit A to D has a maximum numeric output in binary. Dividing the full scale analog input by the A to D maximum value gives the resolution of each bit.

    Be certain that the A to D has a BCD coded output and not binary. That will make an enormous difference.
     
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