7单只数码管循环显示 0~9单片机 语言程序设计实训 例 C 100 ---基于 8051 和 仿真

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% E& @/ ?# V+ e* _  m  #include<reg51.h>
#include<intrins.h>
! J% X0 \: [' l- f; _#define uchar unsigned char
#define uint unsigned int
uchar code DSY_CODE[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0xff};
* C: D6 s  _$ B2 q$ w% [6 K+ {//延时
void DelayMS(uint x)
" z& F7 k' u0 }{
/ D: G* p  M1 |$ nuchar t;
# z9 X6 {6 D( p0 ewhile(x--) for(t=0;t<120;t++);
}
//主程序
void main()
{
uchar i=0;
P0=0x00;
while(1)
' ?5 \7 V5 d- ^5 o+ g7 t{
" n; Z$ }8 |) I+ z  O) ^$ G. XP0=~DSY_CODE;
i=(i+1)%10;
" d2 g6 w, T) F- o$ e4 u, Y& {. A, XDelayMS(300);
9 T0 W1 E7 A. F2 o4 Q5 h' g}
}  
) Y7 W9 V$ L& {9 O5 N
! `; Z# D7 L$ m. p' r% }