数码管的示意图如上，通过点亮a-g七个led来拼成对应的数字或字符，数码管有共阳极（底电平亮）和共阴极（高电平亮），以上图的数字2为例：
共阳极(0亮1灭)： DP G F E D C B A
1 0 1 0 0 1 0 0 = 0xA4 共阴极(1亮0灭)： DP G F E D C B A
0 1 0 1 1 0 1 1 = 0x5B 全部定义：
码表：
共阴接法，不带小数点。数码管段选码表:
Unsigned char code distab[16]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07, 0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71}
共阴接法，带小数点数。码管段选码表:
Unsigned char code distab[16]={0xbf,0x86,0xdb,0xcf,0xe6,0xed,0xfd,0x87,0xff,0xef,0xf7,0xfc,0xb9,0xde,0xf9,0xf1}
共阳接法，无小数点。数码管段选码表：
unsigned char code distab[16]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0x88,0x83,0xc6,0xa1,0x86,0x8e}
共阳接法，有小数点。数码管段选码表：
unsigned char code distab[16]={0x40,0x79,0x24,0x30,0x19,0x12,0x02,0x78,0x00,0x10,0x08,0x03,0x46,0x21,0x06,0x0e}
带小数点数码管的显示
数码管的示意图如上，通过点亮a-g七个led来拼成对应的数字或字符，数码管有共阳极（底电平亮）和共阴极（高电平亮），以上图的数字2为例：
共阳极(0亮1灭)： DP G F E D C B A
1 0 1 0 0 1 0 0 = 0xA4 共阴极(1亮0灭)： DP G F E D C B A
0 1 0 1 1 0 1 1 = 0x5B 全部定义：
码表：
共阴接法，不带小数点。数码管段选码表:
Unsigned char code distab[16]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07, 0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71}
共阴接法，带小数点数。码管段选码表:
Unsigned char code distab[16]={0xbf,0x86,0xdb,0xcf,0xe6,0xed,0xfd,0x87,0xff,0xef,0xf7,0xfc,0xb9,0xde,0xf9,0xf1}
共阳接法，无小数点。数码管段选码表：
unsigned char code distab[16]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0x88,0x83,0xc6,0xa1,0x86,0x8e}
共阳接法，有小数点。数码管段选码表：
unsigned char code distab[16]={0x40,0x79,0x24,0x30,0x19,0x12,0x02,0x78,0x00,0x10,0x08,0x03,0x46,0x21,0x06,0x0e}
举报
