File list (Check if you may need any files):
89C51KEYBOARD-TEST\键盘实验\ASM\KEY
..................\........\...\KEY.ASM
..................\........\...\KEY.BIN
..................\........\...\KEY.LST
..................\........\...\KEY.M51
..................\........\...\KEY.OBJ
..................\........\...\KEY.Opt
..................\........\...\KEY.Uv2
..................\........\...\KEY.hex
..................\........\...\KEY.lnp
..................\........\...\KEY.plg
..................\........\...\UNTITLED.DSK
..................\........\C\KEY
..................\........\.\KEY.C
..................\........\.\KEY.LST
..................\........\.\KEY.M51
..................\........\.\KEY.OBJ
..................\........\.\KEY.Opt
..................\........\.\KEY.Uv2
..................\........\.\KEY.hex
..................\........\.\KEY.lnp
..................\........\.\KEY.plg
..................\........\ASM
..................\........\C
..................\键盘实验
89C51KEYBOARD-TEST