1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: 5 to 24 decoder from 3 to 8 decoders

  1. Jan 22, 2009 #1
    1. The problem statement, all variables and given/known data
    Design a 5:24 decoder using three 3:8 decoders and one 2:4 decoder.
    1)Show the truth table.
    2)Draw a block diagram of the final decoder. Use X4 as the MSB and X0 as the LSB.

    2. The attempt at a solution
    I have the truth table drawn. Because it is a 33 line truth table I don't want to type it out. But I start out with:
    EN X:43210 Y:
    0 xxxxx
    1 00000 Y0=1
    1 00001 Y1=1
    1 10111 Y23=1

    I am having trouble figuring out how to connect the decoders to get a proper decoder.
    Last edited: Jan 22, 2009
  2. jcsd
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook

Can you offer guidance or do you also need help?
Draft saved Draft deleted