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Write down the VERILOG code for an AND gate and the testbench code to test it

Write down the VERILOG code for an AND gate and the testbench code to test it
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Answer #1

// Verilog Test Bench for tri-state buffer

module tb();

reg r_in_x;

reg w_enable;

wire w_output_x;

initial begin

$display("----------------------\nTri-State Buffer\n----------------------\n");


$monitor("input_x = %b, enable = %b, output_x = %b", r_in_x, w_enable, w_output_x);

// Generation of stimulus

r_in_x = 0;w_enable= 0;

# 10 r_in_x = 0;# 10 r_in_x = 1;# 10 w_enable = 1; # 10 r_in_x = 1;# 10 r_in_x = 0; # 10 w_enable = 1;

End

// Tri-state buffer instantiation

tristate_buffer u_tristate_buffer

( .input_x (r_in_x),

.enable (w_enable),  

.output_x (w_output_x));


endmodule

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