File list (Check if you may need any files):
33.按键串口发送字符(配合串口调试\按键\STARTUP.A51
.................................\....\STARTUP.LST
.................................\....\STARTUP.OBJ
.................................\....\按键
.................................\....\按键.c
.................................\....\按键.hex
.................................\....\按键.lnp
.................................\....\按键.LST
.................................\....\按键.M51
.................................\....\按键.OBJ
.................................\....\按键.opt.bak
.................................\....\按键.plg
.................................\....\按键.Uv2.bak
.................................\....\按键.uvopt
.................................\....\按键.uvproj
.................................\....\按键_Opt.Bak
.................................\....\按键_uvopt.bak
.................................\按键
33.按键串口发送字符(配合串口调试