c51驱动步进马达的电路和程序代码 #include c:\mc51\8051io.h /* include i/o header file */ #include c:\mc51\8051reg.h register unsigned char j,flag1,temp; register unsigned int cw_n,ccw_n; unsigned char step[8]={0x80,0xc0,0x40,0x60,0x20,0x30,0x10,0x90} #