ex4-4.c

来自「Keil Cx51 V7.0单片机高级语言编程与uVision2应用实践」· C语言 代码 · 共 20 行

    #include <reg51.h>
    char code seg[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f};
    void dsp(char digt, j)  {
        unsigned char tmp;
        SBUF=seg[digt];
        P1=j;
        tmp=0x7f;
        while(tmp--);
     }

    void main()  {
        SCON=0x00;
        while(1) {
          dsp(0x08, 1);
          dsp(0x00, 2);
          dsp(0x03, 4);
          dsp(0x01, 8);
        }
     }