AT89S51实验板 .............\AT89S51实验板.wps .............\Backup of PCB1.PCB .............\Backup of Schlib7.Lib .............\Backup of Sheet1.Pcb .............\Backup of Sheet1.Sch .............\Backup of Sheet1.XLS .............\MyDesign.ddb .............\Previous Backup of PCB1.PCB .............\Previous Backup of Sheet1.Pcb .............\Previous Backup of Sheet1.Sch .............\Previous Backup of Sheet1.XLS