Protues仿真+keilC51+4只数码管滚动显示0~3.zip

/* *4只数码管循环显示0~3* */ #include <reg51.h> typedef unsigned char uint8; typedef unsigned int uint16; code uint8 LED_CODE[] = {0xC0,0xF9,0xA4,0xB0}; void delay(uint16 x) { uint16 i,j; for(i = x; i > 0; i --) for(j = 114; j > 0; j --); } void main() { uint8 i; while(1) { for(i = 0; i < 4; i ++) { P3 = 0x01 << i; P0 = LED_CODE[i]; delay(250); } } }