module ttl7432(Out, A, B); output [3:0] Out; input [3:0] A; input [3:0] B; or #15 (Out[0], A[0], B[0]); or #15 (Out[1], A[1], B[1]); or #15 (Out[2], A[2], B[2]); or #15 (Out[3], A[3], B[3]); endmodule