设计一个序列检测器检测序列1110010，每输入一个序列1110010则会在输出端输出一个1，其余时间为0。用vhdl来写

以下是一个简单的VHDL代码，用于实现序列检测器：

library IEEE;
use IEEE.STD_LOGIC_1164.ALL;

entity sequence_detector is
    Port ( clk : in  STD_LOGIC;
           input : in  STD_LOGIC;
           output : out  STD_LOGIC);
end sequence_detector;

architecture Behavioral of sequence_detector is

    type state_type is (S0,S1,S2,S3,S4,S5,S6);

    signal current_state,next_state : state_type;

begin

    process(clk)
    begin
        if rising_edge(clk) then
            current_state <= next_state;
        end if;
    end process;

    process(current_state,input)
    begin
        case current_state is
            when S0 =>
                if input = '1' then
                    next_state <= S1;
                else
                    next_state <= S0;
                end if;
            when S1 =>
                if input = '1' then
                    next_state <= S2;
                else
                    next_state <= S0;
                end if;
            when S2 =>
                if input = '1' then
                    next_state <= S3;
                else
                    next_state <= S0;
                end if;
            when S3 =>
                if input = '0' then
                    next_state <= S4;
                else
                    next_state <= S0;
                end if;
            when S4 =>
                if input = '0' then
                    next_state <= S5;
                else
                    next_state <= S0;
                end if;
            when S5 =>
                if input = '1' then
                    next_state <= S6;
                else
                    next_state <= S0;
                end if;
            when S6 =>
                if input = '0' then
                    next_state <= S0;
                else
                    next_state <= S6;
                end if;
        end case;
    end process;

    output <= '1' when current_state = S6 else '0';

end Behavioral;

在这个代码中，我们定义了一个状态机，该状态机有7个状态，每个状态代表序列检测器的不同状态。每个时钟周期，输入数据会根据当前状态被发送到下一个状态。如果该输入序列与预期序列匹配，则状态机进入下一个状态，并在输出端产生一个1. 否则，状态机返回到初始状态，并在输出端输出0。