...C写的单片机矩阵键盘计算器程序,用共阴数码管显示。能计算加减乘除...答:include<reg51.h> define uchar unsigned char;uchar LED1,LED2,LED3,LED4;uchar keyval,calflag,s_dat,d_dat;uchar distab[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0x88,0x83,0xc6,0xa1,0x86,0x8e,0xff};unsigned int number,r_dat;void delay(unsigned int a...
小白求救,51单片机利用两个数码管实现60秒倒计时?答:我想看看你写的程序!可以就发我一下你的代码和你的那个硬件图吧。然后下面这个程序你可以参考一下。是符合我的硬件图的。include <reg51.h> unsigned char table[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f};void show(unsigned char n);void delay(unsigned int k);void ...