File list (Check if you may need any files):
UsbKeyboard_iar\Debug\Exe\UsbKeyboard.d51
...............\.....\...\UsbKeyboard.hex
...............\.....\List\Key.s51
...............\.....\....\Main.s51
...............\.....\....\PDIUSBD12.s51
...............\.....\....\UART.s51
...............\.....\....\UsbCore.s51
...............\.....\....\UsbKeyboard.map
...............\.....\Obj\Key.r51
...............\.....\...\Main.r51
...............\.....\...\PDIUSBD12.r51
...............\.....\...\UART.r51
...............\.....\...\UsbCore.r51
...............\.....\...\UsbKeyboard.pbd
...............\hardware\iar_interrupt.h
...............\........\io_def.h
...............\........\io_macro.h
...............\........\Key.c
...............\........\Key.h
...............\........\LED.h
...............\........\MyType.h
...............\........\UART.c
...............\........\UART.h
...............\lib\cl-pli-nsoc-1e16x01.r51
...............\..nk\at89s52.xcl
...............\settings\test8051.cspy.bat
...............\........\test8051.dbgdt
...............\........\test8051.dni
...............\........\test_8051.wsdt
...............\........\UsbKeyboard.cspy.bat
...............\........\UsbKeyboard.dbgdt
...............\........\UsbKeyboard.dni
...............\........\UsbKeyboard.wsdt
...............\........\UsbMouse.cspy.bat
...............\........\UsbMouse.dbgdt
...............\........\UsbMouse.dni
...............\........\UsbMouse.wsdt
...............\usb\PDIUSBD12.c
...............\...\pdiusbd12.h
...............\...\UsbCore.c
...............\...\UsbCore.h
...............\UsbKeyboard.dep
...............\UsbKeyboard.ewp
...............\UsbKeyboard.eww
...............\user\config.h
...............\....\Main.c
...............\Debug\Exe
...............\.....\List
...............\.....\Obj
...............\Debug
...............\hardware
...............\lib
...............\link
...............\settings
...............\usb
...............\user
UsbKeyboard_iar