杨创utu2440开发板的原理图和封装库，原理图为orcad格式-Yang Chong utu2440 development board schematic and footprint library, the principle format photo orcad

ORCAD SIM900 library schematic and foot print for allegro. Use full to add into the libraries of Orcad 16.5 and higher and design schematics as well as PCB footprint

orcad allegro footprint