51单片机直接驱动共阴极数码管

#define B01110000 0x70
#define B01110001 0x71
#define B01110010 0x72
#define B01110011 0x73
#define B01110100 0x74
#define B01110101 0x75
#define B01110110 0x76
#define B01110111 0x77
#define B01111000 0x78
#define B01111001 0x79
#define B01111010 0x7a
#define B01111011 0x7B
#define B01111100 0x7c
#define B01111101 0x7d
#define B01111110 0x7e
#define B01111111 0x7f

#define B10000000 0x80
#define B10000001 0x81
#define B10000010 0x82
#define B10000011 0x83
#define B10000100 0x84
#define B10000101 0x85
#define B10000110 0x86
#define B10000111 0x87
#define B10001000 0x88
#define B10001001 0x89
#define B10001010 0x8a
#define B10001011 0x8B
#define B10001100 0x8c
#define B10001101 0x8d
#define B10001110 0x8e
#define B10001111 0x8f

#define B10010000 0x90
#define B10010001 0x91
#define B10010010 0x92
#define B10010011 0x93
#define B10010100 0x94
#define B10010101 0x95
#define B10010110 0x96
#define B10010111 0x97
#define B10011000 0x98
#define B10011001 0x99
#define B10011010 0x9a
#define B10011011 0x9B
#define B10011100 0x9c
#define B10011101 0x9d
#define B10011110 0x9e
#define B10011111 0x9f

#define B10100000 0xa0
#define B10100001 0xa1
#define B10100010 0xa2
#define B10100011 0xa3
#define B10100100 0xa4
#define B10100101 0xa5
#define B10100110 0xa6
#define B10100111 0xa7
#define B10101000 0xa8
#define B10101001 0xa9
#define B10101010 0xaa
#define B10101011 0xaB
#define B10101100 0xac
#define B10101101 0xad
#define B10101110 0xae
#define B10101111 0xaf

#define B10110000 0xB0
#define B10110001 0xB1
#define B10110010 0xB2
#define B10110011 0xB3
#define B10110100 0xB4
#define B10110101 0xB5
#define B10110110 0xB6
#define B10110111 0xB7
#define B10111000 0xB8
#define B10111001 0xB9
#define B10111010 0xBa
#define B10111011 0xBb
#define B10111100 0xBc
#define B10111101 0xBd
#define B10111110 0xBe
#define B10111111 0xBf

#define B11000000 0xc0
#define B11000001 0xc1
#define B11000010 0xc2
#define B11000011 0xc3
#define B11000100 0xc4
#define B11000101 0xc5
#define B11000110 0xc6
#define B11000111 0xc7
#define B11001000 0xc8
#define B11001001 0xc9
#define B11001010 0xca
#define B11001011 0xcB
#define B11001100 0xcc
#define B11001101 0xcd
#define B11001110 0xce
#define B11001111 0xcf

#define B11010000 0xd0
#define B11010001 0xd1
#define B11010010 0xd2
#define B11010011 0xd3
#define B11010100 0xd4
#define B11010101 0xd5
#define B11010110 0xd6
#define B11010111 0xd7
#define B11011000 0xd8
#define B11011001 0xd9
#define B11011010 0xda
#define B11011011 0xdB
#define B11011100 0xdc
#define B11011101 0xdd
#define B11011110 0xde
#define B11011111 0xdf

#define B11100000 0xe0
#define B11100001 0xe1
#define B11100010 0xe2
#define B11100011 0xe3
#define B11100100 0xe4
#define B11100101 0xe5
#define B11100110 0xe6
#define B11100111 0xe7
#define B11101000 0xe8
#define B11101001 0xe9
#define B11101010 0xea
#define B11101011 0xeB
#define B11101100 0xec
#define B11101101 0xed
#define B11101110 0xee
#define B11101111 0xef

#define B11110000 0xf0
#define B11110001 0xf1
#define B11110010 0xf2
#define B11110011 0xf3
#define B11110100 0xf4
#define B11110101 0xf5
#define B11110110 0xf6
#define B11110111 0xf7
#define B11111000 0xf8
#define B11111001 0xf9
#define B11111010 0xfa
#define B11111011 0xfB
#define B11111100 0xfc
#define B11111101 0xfd
#define B11111110 0xfe
#define B11111111 0xff

uchar code helloB[]={B01110110,B01111001,B00111000,B00111111}; //HELLO

const unsigned char LED7Code[]={
0x3F,// 0
0x06,// 1
0x5B,// 2
0x4F,// 3
0x66,// 4
0x6D,// 5
0x7D,// 6
0x07,// 7
0x7F,// 8
0x6F,// 9
0x77,// A
0x7C,// B
0x39,// C
0x5E,// D
0x79,// E
0x71// F

};

void delay(int n);
void display0_F();
void displayHELLO();
//
void main(void)
{

P2=0xff; //先将段码关闭
P3=0xff; //将位码关闭
delay(20);//等待一会

while(1)
{
displayHELLO();
display0_F();
}
}