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9. XOR Gate Using Basic Gates

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Solving Approach

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Code

// ============================================================
// Basic Gates (given)
// ============================================================
module and_gate(input a, b, output y);
    assign y = a & b;
endmodule

module or_gate(input a, b, output y);
    // write code here for or gate
    assign y = a |b ;
endmodule

module not_gate(input a, output y);
    // write code here for not gate
   assign y = ~a ;
endmodule

// ============================================================
// XOR Gate
// ============================================================
module xor_gate (
    input  a, b,
    output y
);
   wire w1 , w2 ;
   assign w1 = a & ~b ;
   assign w2 = ~a & b ;
   assign y = w1 | w2 ;
endmodule

 

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