51单片机的秒表计时器设计,求大神帮忙设计电路图和C语言程序!!_百度知...答:这个程序可以实现秒的计时,按键控制开始、暂停、清零功能,更多功能自己在看清程序的基础上进行改进。include <reg51.H>sbit P3_5 =P3^5;unsigned char code dispcode[]={0xC0,0xF9,0xA4,0xB0,0x99,0x92,0x82,0xF8, 0x80,0x90,0x88,0x83,0xC6,0xA1,0x86,0x8E,0x00};unsigned char...
设计一个30秒倒计时器,每一秒显示减1,倒计时至0,LED1亮,并具有启动,停 ...答:code unsigned char tab[]= {0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90};//共阳数码管 0-9 unsigned char Dis_Shiwei;//定义十位 unsigned char Dis_Gewei; //定义个位 void delay(unsigned int cnt){ while(--cnt);} main(){ TMOD |=0x01;//定时器设置 10ms in ...