An automated securities order execution system includes order entering means for a client to enter an order and at least one filtering means for determining whether the order can be automatically executed. A lock section is attached at a position corresponding to the penetrating hole in the inner wall of the one housing facing the other housing when the connectors are interlocked with each other, and is composed to be lockable with the lock member inserted into the penetrating hole. The memory stores a code matrix including driving codes respectively set for the driving electrodes and driving periods.