为什么avr单片机时钟用定时器做会出现一秒很长时间才跳?
#include"keyread.h"#defineunitunsignedint#defineucharunsignedcharcharled7_zdm[10]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f};charwxm[6]={0xdf,0xef,0xf7,0xfb,0xfd,0xfe};unittime[3]={10,10,10};//时间秒tine[0],分time[1],时time[2]//初 ...