| 摘要 |
<p>PURPOSE:To exclude the invasion of a disturbing signal and to attain cost down by providing a conductor pattern between a terminal group not fitted to a back panel and a terminal group fitted to the back panel but not connected to a storage element mounted. CONSTITUTION:A printed wiring board 6a is provided with the 1st terminal group 6b' connected to a storage element ME mounted among terminals of the 1st connector 6b fitted to the back panel, the 2nd terminal group 6b'' not connected to the storage element ME among terminals of the connector 6b and the 2nd connector 6c not fitted to the back panel. Then a conductor pattern 6d connects the terminal group 6b'' and the terminal group of the connector 6c. Through the constitution above, the print wiring boards for the basic mem ory unit 60 and extension memory units 61-6N are all of the same design, and since both ends of the conductor pattern 6d are opened, it is immune to the effect of a disturbing signal.</p> |
