| 摘要 |
<p>PROBLEM TO BE SOLVED: To make executable respective arbitrary functions at the same time or individually while enabling PC cards to be connected to one slot for PC card connection. SOLUTION: Functions 8a, 8b and 8c of circuits actualizing the functions of the respective PC cards are connected to controllers 7, respectively. The connection relation between the controllers and functions is put in hierarchical structure so that the function 8a and the controller 7 of the PC card 5b are connected when viewed from the controller 7 of the PC card 5a of top order and the function 8b and the controller 7 of the PC card are connected when viewed from the controller 7 of the PC card 5b. A high-order controller controls a connected function and a controller of low order to demarcate the layers at the controller parts and the functions can be executed independently, one by one. Through this control, the functions of the PC cards can be executed at the same time or independently at need.</p> |
