|
发表于 2007-9-5 17:14:23
|
显示全部楼层
单个数码管用3-8译码器作处理
-A-
F| |B
|-G-|
E| |C
-D- .DOT
数码管显示
数字 A B C D E F G DOT 全值
0 1 1 1 1 1 1 0 0 0110 111(0/1) 0XFC
1 0 1 1 0 0 0 0 0 0110 000(0/1) 0X60
2 1 1 0 1 1 0 1 0 1101 101(0/1) 0XDA
3 1 1 1 1 0 0 1 0 1111 001(0/1) 0XF2
4 0 1 1 0 0 1 1 0 0110 011(0/1) 0X66
5 1 0 1 1 0 1 1 0 1011 011(0/1) 0XB6
6 1 0 1 1 1 1 1 0 1011 111(0/1) 0XBE
7 1 1 1 0 0 0 0 0 1110 000(0/1) 0XE0
8 1 1 1 1 1 1 1 0 1111 111(0/1) 0XFE
9 1 1 1 1 0 1 1 0 1111 011(0/1) 0XF6
A 1 1 1 0 1 1 1 0 1110 111(0/1) 0XEE
b 0 0 1 1 1 1 1 0 0011 111(0/1) 0X3E
C 1 0 0 1 1 1 0 0 1001 110(0/1) 0X9C
d 0 1 1 1 1 0 1 0 0111 101(0/1) 0X7A
E 1 0 0 1 1 1 1 0 1001 111(0/1) 0X9E
F 1 0 0 0 1 1 1 0 1000 111(0/1) 0X8E
注意这里DOT(也就是DP)后都是0,要改变DP,另外作与或
还有,这里是从高到低,你要从低到高的话,将序列反过来 |
|