| 摘要 |
PURPOSE:To mount mixedly and freely a bubble memory device on a printed circuit board where various types of circuits are mounted by mounting said memory device and direct peripheral circuits on both sides of the board, and providing a lead terminal to the side wall of the board. CONSTITUTION:A magnetic bubble memory module 1 is provided with a multi- layer printed circuit board 2, four IC parts 3 constituting a coil driver circuit, IC parts 4 constituting a function driver circuit, two IC parts 5 constituting a sense amplifier circuit, chip parts 6 of a resistance and a capacitor, lead terminal 7 and a bubble memory device 10. The device 10 and parts 3 and 4 are mounted on the upper surface side of the board 2; while parts 5 and 6 are packed on the rear side of the board 2. In addition, the terminal 7 is provided the side wall of the board 2 so that it is led almost rectangularly to the outside from the rear side of the board 2. Thus a bubble memory device can be packed to another printed board.
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