To improve the efficiency in producing by eliminating a waiting time for rewriting data.

When a bar code reader 2 disposed on the game board 4 supply side of a table 1a of a working machine 1 reads the machine type of the game board 4, and this machine type agrees with the machine type of the game board 4 precedently worked, the working machine 1 continues the work according to the working data stored in a first inside memory 7a after the game board 4 is located and mounted on the table 1a. When the machine types are different from each other, after the completion of working the precedent game board 4, the working machine 1 extracts the working data corresponding to the different machine type form a second inside memory 7b to renewably store the working data in the first inside memory 7a and perform the working operation according to the working data in the first inside memory 7a after the different type of the game board 4 is located and mounted on the table 1a.