timescale lns / lps module ha (input a, b, output sum, carry); assig sum=a`b: assign carry=a6b; endmodule timescale lns / lps modale testbench 0 : rega, b; wire sum, carry; integer ; ha dt(.a(a), b (b), .sum (sum), .carry (carry)); initial begin a=0; b=0; Bonitor (a=sob b=0b. Sumsub carry ob", a, b, sum, carry): for (i=0; i