.DRA File Extension

CAD drawing created by PCB Editor, a printed circuit board (PCB) design application included with the OrCAD PCB Designer software suite; stores the schematic for a drawn PCB, which specifies the layout of circuit components.

DRA files can be viewed with a free program called the Allegro Free Physical Viewer.

Audio file saved by Dragon, a program used to generate text documents from voice recordings; stores the audio as it was dictated by the user; saved so that the software's generated text can be corrected later if it does not match the dictation.

Dragon uses speech recognition technology to translate spoken audio data into text documents.

File created by Dolphin PartMaster, a CAD/CAM application suite used for designing and manufacturing components; contains numerical control instructions for directing a machine tool, such as a drill, during production.

The Dolphin PartMaster CAD program is used to design the part, which is then passed to the PartMaster CAM program to generate toolpaths and their coordinates.

NOTE: PartMaster actually includes multiple programs in the software package for completing designs and generating toolpaths.