单只按键控制单只数码管滚动显示.rar

/* *单只按键控制单只数码管滚动显示* */ #include <reg51.h> typedef unsigned char uint8; typedef unsigned int uint16; #define Key() (P1 & 0x01) code uint8 LED_CODE[] = {0xC0,0xF9,0xA4,0xB0,0x99,0x92,0x82,0xF8, 0x80,0x90,0x88,0x83,0xA7,0xA1,0x86,0x8E,0x00}; void delay(uint16 x) { uint16 i,j; for(i = x; i > 0; i --) for(j = 114; j > 0; j --); } void main() { uint8 i = 0; while(1) { if(Key()) { while(Key()); P0 = LED_CODE[i]; i = (i + 1) % 17; delay(10); } } }