相关内容:四位二进制计数器74161.
MAXPLUS10.1 HELP中,74161功能:
人眼的视觉暂留频率为24Hz.一般显示工作频率选在24Hz左右.
实验示例:
10 进制8位7段译码器设计
---------10进制7segment
LIBRARY ieee;
USE ieee.std_logic_1164.all;
ENTITY DECL7S is
port (A: in STD_LOGIC_VECTOR(3 DOWNTO 0);
LED7S: OUT STD_LOGIC_VECTOR(7 DOWNTO 0));
END DECL7S;
ARCHITECTURE CODE of DECL7S is
BEGIN
PROCESS(A)
BEGIN
CASE A IS
When "0000" =>LED7S LED7S LED7S LED7S LED7S LED7S LED7S LED7S LED7S LED7S null;
END CASE;
END PROCESS;
END ;