串行口\01 ......\01.c ......\01.hex ......\01.lnp ......\01.LST ......\01.M51 ......\01.OBJ ......\01.plg ......\01.uvopt ......\01.uvproj ......\01_uvopt.bak ......\01_uvproj.bak ......\STARTUP.A51 ......\STARTUP.LST ......\STARTUP.OBJ 串行口