Sounds like orcad to me? TTYL > I have a zipped file containing some directories. one directory contain > schematic files with the following extensions: DBK,DSN,MNL and OPJ. can > someone identify what program use this files? > > > Regards > > Tal Bejerano > AMC - ISRAEL -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics