| 摘要 |
PURPOSE:To obtain a keyboard unit system which is not only portable but also used on a desk, by connecting the first and the second keyboards to a small- sized electronic apparatus selectively and freely interchangeably. CONSTITUTION:A small-sized electronic apparatus body 1 having data from a keyboard and a display part 3 is provided with a connector pin 9 as a connecting means which connects the apparatus body 1 and a keyboard unit smaller than the apparatus body 1 electrically or mechanically. A receiving part 10 which receives the unit is notched in the thickness direction. Therefore, this unit is placed on the apparatus body 1 to connect them electrically through the pin 9. Meanwhile, a keyboard unit 20 larger than the apparatus body 1 has a slot part 24 for loading the apparatus body 1 and is provided with a connector 90 which is should be connected to the pin 9 of the apparatus body 1, and the unit 20 is connected to the apparatus body 1 by them.
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