Binary Adder Design

Discussion in 'Homework Help' started by Tarquin, Feb 2, 2007.

  1. Tarquin

    Thread Starter Member

    Dec 14, 2006
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    I need the circuit for a 4 bit binary adder using JK Flip Flops.
     
  2. Dave

    Retired Moderator

    Nov 17, 2003
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    Please read, then have another go.

    Dave
     
  3. beenthere

    Retired Moderator

    Apr 20, 2004
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    Hi,

    That's a fun assignment. It's a bit like having to make a car out of bricks - possible, but a bit clunky.
     
  4. Papabravo

    Expert

    Feb 24, 2006
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    Adders don't require flip-flops. It's a combinatorial circuit.
     
  5. beenthere

    Retired Moderator

    Apr 20, 2004
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    But think of the challenge.
     
  6. Papabravo

    Expert

    Feb 24, 2006
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    Nonsense! Who would even think of such a question?
     
  7. thingmaker3

    Retired Moderator

    May 16, 2005
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    Some instructor in Bhopal, obviously.
     
  8. Papabravo

    Expert

    Feb 24, 2006
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    ......or not since the OP didn't say he was in school. The chief engineer might be engaged in a bit of hazing.
     
  9. Tarquin

    Thread Starter Member

    Dec 14, 2006
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    I am in an engg college. Could u atleast get me started in the right direction (regarding the assignment), however silly it might seem to u at present.:confused:
     
  10. Papabravo

    Expert

    Feb 24, 2006
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    I already did. A binary adder is a combinatorial circuit which can be synthesized with logic gates alone. The input values and output values may be held in registers constructed with any of several different kinds of flip-flops. One of those types is the JK type.

    The adder has three inputs, called operand A, operand B, and Carry In. It produces two outputs called Result and Carry Out. The carry out from one stage is connected to the carry in of the next stage. The carry in to the lowest stage can be set to zero. Make yourself a truth table and just do it! Is that enough help or do you still need more?
     
  11. Tarquin

    Thread Starter Member

    Dec 14, 2006
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    Thanx!! :)
     
  12. Papabravo

    Expert

    Feb 24, 2006
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    It would be great if you could post your results for all to see.
     
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