合肥工业大学：EDA技术与应用（精品课程）：p257_ex8_36_experiment8_3_sound

-- VHDL code position: p257_ex8_36_experiment8_3_sound -- Note : This is code file of tennis play -- See Also: example 8_35(top module), 8_36, 8_37, 8_38, 8_39, 8_40, 8_41, 8_42 -- Debug : no debug --------------------------------------------------------------------------------- --球提示 library ieee; use ieee.std_logic_1164.all; entity sound is port ( clk : in std_logic; --发声时钟 sig : in std_logic; --正确接球信号 en : in std_logic; --球拍接球脉冲 sout : out std_logic --提示声输出，接小喇叭 ); end entity sound; architecture ful of sound is begin sout <= clk AND ( NOT sig ) AND en; --球拍接球，没接到时，发提示声 end architecture ful;