这是计时器的程序和电路图,用的bcd数码管,仿真不成功,不知道哪里错了...答:P0口段选,P3.0和P3.1位选 定时器2用法见百度“T2CON”***/ include<reg52.h> define uint unsigned int define uchar unsigned char uchar code num[12]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0xff,0xbf}; //共阳极数码管0-9数组以及全灭和“-”符号 uchar ...