5-bit asynchronous counter that counts from 00101 to 10110

Discussion in 'Homework Help' started by ningning860310, Apr 7, 2009.

  1. ningning860310

    Thread Starter New Member

    Apr 7, 2009
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    Hey guys:

    i need help with my homework. It's urgent.. Please help me.
    i would like to design an asynchronous couter that counts from 5(00101) to 22(10110) with Microsim using JK flip-flops. Is there anyone who can help me solve this? I would really appreciate it. If possible, please help me draw the schematics with Microsim.

    Thank you very much
     
  2. tuborggg

    Active Member

    Jan 3, 2009
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  3. Bernard

    AAC Fanatic!

    Aug 7, 2008
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    Now that you've studied up on asynchroneous counters, you are ready for some hardware. Start with 2.5 chips of 74C76 dual J-K FFs with preset[ active lo] and clear [ active lo ]. Go back to prev. ref, " a different way of making a four-bit " up" counter", adding one more FF. FF labled A-E. Initial condition: Preset[low] A & C,then return all presets high.Start clock and count to 22. Decode 22 with 5 in NAND gate or combination of gates to give 5 in NAND; input notA, B, C notD, E. All J-K inputs are bussed together and connected to gate output. When 22 is reached, gate out goes low disabling count. Start over with pre-set. Microsim not in my vocabulary.
     
  4. ningning860310

    Thread Starter New Member

    Apr 7, 2009
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    hey thX...BUT Could you give me the circuit diagram?
     
  5. beenthere

    Retired Moderator

    Apr 20, 2004
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    If you read Bernard's post, you will find that he did.
     
  6. ningning860310

    Thread Starter New Member

    Apr 7, 2009
    4
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    really? I didnot find it. I just got here recently. Sorry could you help me?
    but what i would like to know is how to do the simulation with Microsim or other simulation software. Not in the laboratory.

    thanks
     
  7. ningning860310

    Thread Starter New Member

    Apr 7, 2009
    4
    0
    what i would like to know is how to do the simulation with Microsim or other simulation software. Not in the laboratory.could you help me with that?
     
  8. Bernard

    AAC Fanatic!

    Aug 7, 2008
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    This is 'Home work" , so while at home why don't you draw up a schematic of your problem as a start?
     
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