question about subtractors

Discussion in 'General Electronics Chat' started by krpz, Oct 23, 2012.

  1. krpz

    Thread Starter New Member

    Oct 18, 2012
    10
    0
    I have a question about subtractors. Is it possible to design a more efficient 2-bit parallel subtractor than connect 2 bit-slices of 1bit subtractor?
     
  2. kubeek

    AAC Fanatic!

    Sep 20, 2005
    4,670
    804
    I don´t really understand your question. Do you mean chaining two one-bit subtractors to make a two-bit subtractor?
    Also you need to define what "efficient" means in this case. Power consumption? Speed? Complexity? Number of transistors? Easier to design?
     
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