1、LED显示器,P1.0 P1.1 P1.2 P1.3 P1.4 P1.5 P1.6 P1.7,a b c d e f g h,DATA,CLK,P3.0,P3.1,74LS164,Q7 Q6 Q5 Q4 Q3 Q2 Q1 Q0,COM,+5V,a b c d e f g h,COM,+5V,_ _ _ _ _ _ _ _,_ _ _ _ _ _ _ _,LED静态显示电路图,LED（共阳极）,LED（共阳极）,字形码,a,b,c,d,e,f,g,dp,DATA,a-h,P1.5 P1.4 P1.3 P1.2 P1.1 P1.0,CLK,P3.0,P3.1,74LS164,Q0 / Q7,Y0,
2、Y5,Y4,Y3,Y2,Y1,a-h,a-h,a-h,a-h,a-h,LED动态显示电路图,独立式按键,按键的抖动,双稳态去抖电路,+5V,0,1,1,1,0,0,1,+5V,F,D,E,2,C,B,3,6,8,7,5,A,9,0,1,4,P1.0,P1.1,P1.2,P1.3,P1.4,P1.5,P1.6,P1.7,回 复 线,扫 描 线,1,1,1,1,0,1,1,0,0,0,0,0,1,1,1,0,0,0,0,1,1,1,1,0,0,0,0,0,1,1,1,0,1,1,1,1,1,1,0,1,1,1,0,1,1,1,1,1,1,0,1,1,1,0,1,1,1,1,1,1,0,1,1,0,
