NO7：串口中断方式\Debug\Exe\USART.hex
.................\.....\Obj\USART.pbd
.................\.....\...\USART.r51
.................\settings\USART.cspy.bat
.................\........\USART.dbgdt
.................\........\USART.dni
.................\........\USART.wsdt
.................\USART.c
.................\USART.dep
.................\USART.ewd
.................\USART.ewp
.................\USART.eww
.................\Debug\Exe
.................\.....\List
.................\.....\Obj
.................\Debug
.................\settings
NO7：串口中断方式