cadence中常见文件格式（Commonfileformatsincadence）cadence中常见文件格式（Common file formats in cadence）Common file formats in Allegro .brd tool: PCB Design Expert PCB routing .ddb tools: Protel .art tools: CAM350 Allegro PCB Design file/impot ARTwork .d tools: pads2005 .drl tools: Protel ....