File list (Check if you may need any files):
readme.txt
Program
.......\C51.Opt
.......\C51.plg
.......\C51_Opt.Bak
.......\C51_Uv2.Bak
.......\contol.c
.......\function
.......\........\contol.c
.......\........\contol.OBJ
.......\........\contol_interrupt.c
.......\........\FUNCTION.ABS
.......\........\function.DOB
.......\........\function.frm
.......\........\function.hex
.......\........\FUNCTION.M51
.......\........\function.prv
.......\........\function.SYM
.......\........\head.h
.......\........\test.c
.......\........\test.OBJ
.......\........\test2.OBJ
.......\........\扫描键盘 contol.c
.......\........\新建 文本文档 (2).txt
.......\........\新建 文本文档.txt
.......\head.h
.......\keil51.lnp
.......\keil51.M51
.......\keil51.Opt
.......\keil51.plg
.......\keil51.Uv2
.......\keil51_Opt.Bak
.......\keil51_Uv2.Bak
.......\test
.......\....\TEST.ABS
.......\....\test.c
.......\....\test.DOB
.......\....\test.frm
.......\....\test.hex
.......\....\TEST.M51
.......\....\test.OBJ
.......\....\test.prv
.......\....\test.SYM
.......\test.c
.......\test.obj