| 摘要 |
A common connecting connector (2) including all of interface signals with additive function printed circuit boards (3, 4) is provided on a printed circuit board (1) of a main body, and connecting connectors (5, 6) of similar type as the common connecting connector (2) is provided on each of additive function printed circuit boards (3, 4). With this, the additive function printed circuit boards (3, 4) are connected selectively to the printed circuit board (1) of the main body. <IMAGE> |
