为什么HC6800-MS开发板是共阴级数码管,但是我这个把P0口赋为高电平,反而可以显示?
#include <reg51.h>
#define DIG P0
sbit LSA=P1^0;
sbit LSB=P1^1;
sbit LSC=P1^2;
sbit LSD=P1^3;
unsigned char code NUM[10]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f};
void main()
{
LSA=0;
LSB=1;
LSC=1;
LSD=1;
DIG=NUM[0];
}