电子课程设计-电子表
具有调时功能的电子表一、1000分频器count1000 二、4M分频FTP 三、24进制count24 四、60进制count60 五、七段LED显示译码器 leddecoder (VHDL) LIBRARY IEEE;USE IEEE.STD_LOGIC_1164.aLL;USE ieee.std_logic_arith.all;USE ieee.std_logic_UNSIGNED.all;ENTITY leddecoder isPORT(a:in std_logic_vector(3 downto 0); Y:out std_logic_vector(6 downto 0);END leddecoder;ARCHITECTURE led_arc of leddecoder IS BEGINwith A selectY<="0000001" when "0000", "1001111" when "0001", "0010010" when "0010", "0000110" when "0011", "1001100" when "0100", "0100100" when "0101", "0100000" when "0110", "0001111" when "0111", "0000000" when "1000", "0000100" when "1001", "0001000" when "1010", "1100000" when "1011", "0110001" when "1100", "1000010" when "1101", "0110000" when "1110", "0111000" when "1111", "1111111" when others;END led_arc; 六、24+译码器H_24 七、 60+译码器S_60 八、控制开关KG九、电子表dzb