| 摘要 |
PROBLEM TO BE SOLVED: To prevent a connection means from making an erroneous connection, by a method wherein a first board discrimination mark given to either a first or a second printed wiring board, a connection means which electrically connects the two boards together, and a second mark which is given to the connection means to indicate its directivity are provided. SOLUTION: A board discriminating mark 20 represented by letters A and A which are located sandwiching a connector 5 between them is printed on the one surface 2A of a first hard printed wiring board 2, and a board discriminating mark 21 represented by letters B and B which are located sandwiching a connector 6 between them is printed on the one surface 3A of a second hard printed wiring board 3. A mark 22 which is represented by a letter A and indicates the direction of connection of a flexible flat cable 4 which is corresponding to the first hard printed wiring board 2 is printed near the one edge of the cable 4, and a mark 23 which is represented by a letter B and indicates the direction of connection of the flexible flat cable 4 is printed near the other edge of the cable 4. |
