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XOR and XNOR Logic Functions: Truth Tables and Adders

Learn about XOR and XNOR logic functions, Boolean expressions, truth tables, and how they relate to half and full adders. Explore parallel binary adders and 4-bit parallel adders with example output.

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XOR and XNOR Logic Functions: Truth Tables and Adders

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  1. Description  A Logic Symbol  Y XOR B Truth Table  Boolean Expression  XOR Function Output Y is TRUE if input A and input B are different Equivalent Expression Y = Y =

  2. Description  A Logic Symbol  Y XNOR B Truth Table  Boolean Expression  XNOR Function Output Y is FALSE if input A and input B are different. Equivalent Expression Y = Y =

  3. Half & Full Adders • Half Adder • Full Adder

  4. Half & Full Adders

  5. Half-Adder • Function Table • Expression • Logic Circuit

  6. Half-Adder Function Table

  7. Half-Adder Circuit

  8. Full-Adder • Function Table • Expression • Logic Circuit

  9. Full-Adder Function Table

  10. Sum Expression

  11. Carry Out Expression

  12. Full-Adder Circuit

  13. Full-Adder based on Two Half-Adders Full-Adder = Half-Adder + Half-Adder

  14. Parallel Binary Adder • Multiple Single bit Full-Adder connected in Parallel

  15. 4-bit Parallel Adder 1010 0011 ____________ 1101

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