serial code detector question

Discussion in 'Homework Help' started by markp912, Mar 1, 2009.

  1. markp912

    Thread Starter Member

    Feb 4, 2009
    14
    0
    For my homework problems i have to make a circuit to detect the code 1110. The questions reads,

    "Implement a circuit to detect the code 1110."

    I think it means to use a serial code detector, and I think i have to make the output equal "Y" if that helps any. So I was wondering a way to make a circuit like this. Thank you.
     
  2. leftyretro

    Active Member

    Nov 25, 2008
    394
    2
    I think it means to design a logic circuit that outputs a single active signal only when it's four inputs equal to 1110. So design a logic circuit with four inputs and one output that only goes active when that code is on it's inputs. A modified AND circuit is what you are looking for I think.

    Lefty
     
  3. tuborggg

    Active Member

    Jan 3, 2009
    37
    0
    if it's a logic design course, maybe it means to know when you receive the string '1' '1' '1' '0' in 4 clocks - so you should use a Finite State Machine.
    :confused:
     
  4. Papabravo

    Expert

    Feb 24, 2006
    10,148
    1,791
    A shft register and a decoder will also do the trick
     
  5. markp912

    Thread Starter Member

    Feb 4, 2009
    14
    0
    i think its a shift register. thanks for all your help.
     
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