`timescale 1ns/1ns module seq_circuit( input A , input clk , input rst_n, output wire Y ); reg Y1; reg Q1, Q2; reg Q1n,Q2n; always@(posedge clk or negedge rst_n)begin if (!rst_n) begin Y1 <= 0; Q1 <= 0; Q2 <= 0; Q1n<=0; Q2n<=0; end else begin Q1<=Q1n; Q2<=Q2n; end end always @(*...