A method of estimating the reliability of decoded message bits in a digital communications system is proposed. First ends of these first electrostatic current limiting resistors common coupled to a global path to receive a reference voltage. The lockup device 7 has a clutch plate 71, a drive plate 72, a driven plate 73, a plurality of torsion springs 74, a piston 75, and a piston coupling mechanism 76. The coin storing unit includes a plurality of coin storing sections. Further, at least one implementation identifies an intersection point between the reflection ray and the map. The apparatus further including instrumentation for optically reading and analyzing the fluid sample and adding appropriate reagents while the sample it is in the container.