| sbit a = P3^0; | |
| sbit b = P3^1; | |
| sbit c = P3^2; | |
| unsigned char code seg[10] = { | |
| 0x3F, 0x06, 0x5B, 0x4F, 0x66, | |
| 0x6D, 0x7D, 0x07, 0x7F, 0x6F | |
| }; | |
| unsigned char code num[4] = {1, 2, 3, 4}; | |
| void delayMs(unsigned int i) | |
| { | |
| unsigned char t; | |
| while (i--) | |
| { | |
| for (t = 0; t < 120; t++); | |
| } | |
| } | |
| void main(void) | |
| { | |
| unsigned char i; | |
| while (1) | |
| { | |
| for (i = 0; i < 4; i++) | |
| { | |
| P0 = 0x00; | |
| a = i & 0x01; | |
| b = (i >> 1) & 0x01; | |
| c = (i >> 2) & 0x01; | |
| P0 = seg[num[i]]; | |
| delayMs(2); | |
| } | |
| } | |
| } | |