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Saturday, May 5, 2012

Combinatorial Digital Circuit Logic Determining Device

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Block Diagram Of Combinatorial Digital Logic Determining Device

Here is my new electronics circuit for you. This is a brief description/ abstract for the project. Combinatorial digital circuit logic determining device is a circuit which determines the logic of any given combinatorial digital circuit. This is a very helpful tool to know the functionality of an unknown digital circuit. The device has probes which are plugged to the inputs and outputs of the digital circuit under test. This device then determines and displays the functionality of the circuit under test in the form of a boolean equation.

The circuit has number of probes equal to the number of inputs and outputs of the circuit under test. I have implemented it for two inputs and one output. Although, you can make slight modification of the code to make it work for as many inputs and outputs you want.


    This circuit makes use of a micro-controller and few other electronic components to achieve the desired goals. The micro-controller is programmed in embedded C. The output of the circuit is displayed using LEDs. The device can not only used to determine the boolean expression of an unknown digital circuit, it can also be used to test the known digital circuits. It can be used for all kinds of combinatorial digital circuits either ICs or those made of discrete electronic components with little or no modification. Hence, Combinatorial digital circuit logic determination device is a versatile and very helpful tool for use in laboratories and individuals especially when working with a many digital ICs of circuits.

I have done and tested this circuit with simple AND, NAND gates and also with a few other complex logic ICs. It worked well. I have used LEDs forming a K-MAP for display but I am working on upgrading the display to an LCD. The microcontroller used is ATMEGA16 which is an Atmel's AVR series of microcontroller. However, you can try to do the same using other microcontrollers like 8085 or PIC.

Here is the illustrative recorded video of Combinatorial Digital Circuit Logic Determining Device:

This is a Do-It-Yourself project which I encourage you to do on your own. You can do it as a hobby or as a school/college project, especially suitable as a mini or final year major project for engineering students.


The entire circuit schematic and the micro-controller source-code are available with me.
In case you find any difficulty doing it by yourself or if you want the schematic and the source-code of this project, you can contact me.

19 comments:

  1. ShyamalMay 23, 2012 at 6:21 AM

    Very helpful content. Do you have circuit diagram of this topics.

    Hobby Electronics

    ReplyDelete
  2. UnknownMay 27, 2012 at 11:30 AM

    @Shyamal
    Yes, I have the circuit along with the full documentation. You can contact me by email or phone if you are interested.

    ReplyDelete
    Replies
    1. UnknownJanuary 8, 2013 at 8:22 AM

      Plz mail me the full documentation and circuit diagram of this topics to my mail Id: pintu.ee10@iitp.ac.in
      I require this....Thanks

      Delete
  3. Chandra SekaranJune 3, 2012 at 2:45 AM

    @ Deeksith
    Plz mail me the full documentation to my mail Id : chandrasekaranr@in.com . I require this....Thanks

    ReplyDelete
  4. adityaSeptember 11, 2012 at 8:15 AM

    can you please mail me the full documentation in my mail id biswabismaya@gmail.com

    ReplyDelete
  5. adityaSeptember 11, 2012 at 8:17 AM

    plz mail me the full documentation in my mail id

    adityabbsharma@yahoo.in

    ReplyDelete
  6. AlankritiOctober 13, 2012 at 10:00 AM

    plz ....can u mail me the source code and the documentation urgently....

    ReplyDelete
  7. AlankritiOctober 13, 2012 at 10:02 AM

    Plz mail me the documentation and source code on my id...

    ReplyDelete
  8. aarti sharmaJanuary 21, 2013 at 9:32 AM

    plz, do me a favour.... i want to prepare digital logic probe for my project.... could u plz send me the circuit diagram and other necessary details related to the topics...

    ReplyDelete
  9. aarti sharmaJanuary 21, 2013 at 10:21 AM

    sir, plz do me a fovour... i want to prepare digital logic probe as my project... plz send me its circuit diagram and related details....

    ReplyDelete
  10. aarti sharmaJanuary 21, 2013 at 10:23 AM

    plz send me the required details including the circuit diagram of digital logic circuit... i want to prepare it as my project,

    ReplyDelete
  11. UnknownApril 9, 2013 at 5:31 AM

    plz send me the circuit diagram,code and other necessary details related to the topics... my id is crystalmishra@gmail.com

    ReplyDelete
  12. UnknownJuly 14, 2013 at 11:02 PM

    Plz email me at sanjaypatil00000@gmail.com Some of the basic circuits & circuit diagram & also plz tell me how to build the logic of circuit diagram.It will be helpful.Plz Reply fast..

    ReplyDelete
  13. AnonymousAugust 30, 2013 at 1:31 AM

    can u please attach the documentation of this project and also the code here itself..

    ReplyDelete
  14. UnknownSeptember 21, 2013 at 9:51 AM

    plz mail the circuit diagram at singhprachi109gmail.com

    ReplyDelete
  15. UnknownSeptember 21, 2013 at 9:56 AM

    please mail the circuit diagram at singhprachi@gmail.com need it for digital project

    ReplyDelete
  16. UnknownJanuary 29, 2014 at 10:54 AM

    please can u mail me code for tjswini@gmail.com its urgent

    ReplyDelete
  17. AnonymousNovember 26, 2015 at 6:07 AM

    Sir can i have the source codes for this boolean algebra calculator please. Email me to thezeroxl@gmail.com. Thank you.

    ReplyDelete
  18. UnknownJanuary 26, 2016 at 11:38 AM

    Can i have the codes for boolean algebra calculator and combinational ckt. Determining device...

    atulkadam8@gmail.com

    ReplyDelete

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