protel99 的pcb库文件，包含stc全系列单片机，绝对好用，当然，作为PCB的封装，你可以用在绝大多数其他脚数相同的元件上。如果导入后调不出列表，可以点编辑任意修改一个元件名，然后再改回来，保存后就可以了-pcb library files in protel99 stc contains the full range of microcontroller, absolutely easy to use, of course, as the PCB package, you can be used in the vast majority of other foot the same number of elements. If you import a list not after the transfer, you can point to edit any modify an element, and then change it back, you can save the