PPT Slide

//data flow NAND module

module NAND2 (in1, in2, out);

input in1, in2;

output out;

assign out = ~(in1 & in2);

endmodule

// AND made up of 2 consecutive NAND's

module AND2(in1,in2,out);

input in1,in2;

output out;

wire w1; // to connect the 2 NAND's

NAND2 nand1(in1,in2,w1);

NAND2 nand2(w1,w1,out);

endmodule

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