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  • 1. ELECTRONICS DIGITAL
  • 2. NAND and NOR implementaion
    • NAND and NOR gate are used in the design of digital circuit .
    • AND,OR,NOT, into equalent NAND and NOR logic diagrams.
    • The AND invert consist of AND graphic symbol followed by a small circle .it
    • Is also possible to represent a NAND gate by an OR graphic symbol preceded
    • By a small circle in all the inputs . The symbol is know as invert OR
    F=XYZ X Y Z AND- invert
  • 3. X Y Z F=XYZ Invert OR
  • 4. X Y Z F=X+Y+ Z X Y Z F=X Y Z = ( X+Y+Z ) _ _ _ Invert And OR Invert
  • 5. X X _ X X _ X X _ Three graphic symbol of inverter
  • 6. NAND implementation F=AB+CD+E The Sum of products form with AND and OR gate A B C D E AB CD E F=AB+CD+E
  • 7. NAND NAND implementation A B C D E E F=AB+CD+E _
  • 8. The NAND function is so implemented ,that it can be easily converted to a Sum Of products form by using DeMorgans theorem A B C D E E _ AB CD F=AB.CD.E __ __ _ _______ F=AB+CD+E
  • 9. NOR implementation F=(A+B) (C+D) F (A+B) (C+D) E ABCDE
  • 10. A B C D E (A+B) (C+D) E F F=(A+B) (C+D) NOR -AND implementation
  • 11. NOR-NOR implementation A B C D E (A+B) (C+D) E F=(A+B) (C+D) E
  • 12. AND-OR-invert implementation A B C D E F=AB+CD+E ________ AB CD E The two forms NAND-AND and AND-OR are equalent forms And can be treated .Both perform the AND-OR-INVERT AND-NOR
  • 13. A B C D E AB CD E F=AB.CD.E __ __ _ F=AB+CD+E ________ AND-NOR circuit
  • 14. AB CD A B C D E __ __ E _ F F=AB+CD+E ________ NAND-AND
  • 15. OR-AND-Invert implementation
    • The OR-NAND and NOR forms perform the OR-AND-INVERT
    • funcation
    F (A+B) (C+D) E ABCDE F=(A+B).(C+D).E
  • 16. A B C D E F F=(A+B)+(C+D)+E =(A+B).(C+D).E _____ ____ OR-NAND
  • 17. Vasanth B C A achelor riminal ctivites OF