基于51单片机的频率计设计，c语言程序.doc

基于51单片机的频率计设计，c语言程序 #includereg52.h #define uint unsigned int #define uchar unsigned char #define ulong unsigned long sbit dula=P2^6; sbit wela=P2^7; sbit key1=P1^0; sbit key2=P1^1; sbit key3=P1^2; uchar tt=0,mode; ulong num,num1; uchar code shu[]={0x3f,0x06,0x5b,0x4f, 0x66,0x6d,0x7d,0x07,0x7f,0x6f,