An organic semiconductor device is provided. Records are input, compared to a collection of previously input records and likelihood ratios indicating a probability of each input record match each of the collected records are calculated. At least one reference electrode is disposed on the central portion of the flexible substrate. The electrical connector according to the present invention can have a rigid zero clearance between the interfaces in connection, and at the same time can keep a very strong axial force. The high pressure inlet line connects the pump outlet with the inlet for supplying the feed fluid at a high pressure.