实现键盘控制
............\电路
............\....\Last Loaded led deng.DBK
............\....\led .DBK
............\....\led deng.DSN
............\....\led deng.PWI
............\程序
............\....\STARTUP.A51
............\....\STARTUP.LST
............\....\STARTUP.OBJ
............\....\led
............\....\led.LST
............\....\led.M51
............\....\led.OBJ
............\....\led.Opt
............\....\led.Uv2
............\....\led.c
............\....\led.hex
............\....\led.lnp
............\....\led.plg
............\....\led_Opt.Bak
............\....\led_Uv2.Bak