A data processing device which processes electronic data used by a board working machine is disclosed. The data processing device includes a status information processing section which performs at least one of writing processing, editing processing, and reading processing of status information, with respect to the electronic data. The status information at least illustrates whether or not the electronic data has not been completed. Preferably, the status information illustrates any of (1) the electronic data has not been completed, (2) the electronic data has been completed, and is waiting for a test by the board working machine, (3) the electronic data has been tested by the board working machine, and is waiting for authorization, and (4) the electronic data has been authorized.