A full adder

Discussion in 'Homework Help' started by Drags, May 8, 2004.

  1. Drags

    Thread Starter New Member

    Apr 28, 2004

    I have a question regarding a full adder/substractor. I'm studying for an exam and at the moment I am at the serial and paralel adder. My notes say that we can fasten the serial adder by using the NAND-WIRED-AND wiring (and sth. else, i think it is OR-AND or sth.). Could anybody explain what this could be.

    The picture which is attached looks like this: It has a line on NAND elements, and all the outputs are wired in one point (But it is not a short circuit - that I know), and all inputs are inverted, reverse as the equation for the adder says. How can this work?

    Thank you, Drags
  2. m4yh3m

    Senior Member

    Apr 28, 2004