/*
*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);
}
}
}
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