十进制计数器 library ieee; use ieee.std_logic_1164.all; use ieee.std_logic_unsigned.all; entity count10 is port(clr,start,clk: in bit; cout: out bit; library ieee; daout: out std_logic_vector(3 downto 0)); end count10; architecture a of count10 is signal
vhdl设计的秒表程序 含有三个子模块 CNT10 library ieee; use ieee.std_logic_1164.all; use ieee.std_logic_unsigned.all; entity CNT10 is port(count:out std_logic_vector(3 downto 0); cout:out std_logic; cin,rst,clk:in std_logic); end CNT10; architecture behavioral of C
