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Math Help - How to invert binary number in schematic?

  1. #1
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    Oct 2009
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    Exclamation How to invert binary number in schematic?

    I am trying to make a 5-bit add/subtract schematic.
    If C-in is 1 it subtracts and adds C-in to make the negative number.
    How do I make one 5-bit number (B) invert when I chose 1 as C-in?


    C-in(add 0/1 subtract)
    |
    |

    B(0/1) ------- [if C-in is 0, no inversion] (0/1)
    --|>-- [if C-in is 1, invert] (1/0)


    I believe I figured it out, I need a Bus Buffer Gate.
    Ehh... no, a Bus Buffer gives either same output or disabled.
    Last edited by LightEight; November 4th 2009 at 12:24 AM.
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