按键计数显示\read ............\read.c ............\read.hex ............\read.lnp ............\read.LST ............\read.M51 ............\read.OBJ ............\read.plg ............\read.uvopt ............\read.uvproj ............\read_uvopt.bak ............\read_uvproj.bak ............\STARTUP.A51 ............\STARTUP.LST ............\STARTUP.OBJ 按键计数显示