Abstract: The stepping motor has 16 stoppable points of a rotor to be driven by a stator controlled by a drive control unit which is connected to one DC source, wherein the stator comprises four (4) phase coils: an A phase coil and an inverse A phase coil, and a B phase coil and an inverse B coil, and each coil has a first terminal at a first end and a second terminal at a second end, and a first stator pole is wound with the A phase coil and the inverse A coil and a second pole is wound with the B phase coil and the inverse B coil, and these poles are disposed alternately to surround the rotor and activated to generate torque for rotating the rotor with stoppable motion at 16 points during one encircling, wherein the drive unit sequentially shifts the DC current in direction and amount to produce, at the rotor, composite torque vectors having revolutional loci.

Abstract: A programmable logic circuit includes a memory sector and other logic elements which are laid peripherally, wherein the memory sector is prestored with possible input data and output data which are derived by fuzzy reasoning. In application, observed data on an objective entity outside is first treated by a logic element to convert the data to digital form and then input as an address in the memory sector wherein the input observed data is converted by fuzzy logic to an operative data, which is sent to downstream to subsequent circuit elements to control a device. The illustrated embodiment is for an air-conditioning system wherein introduction of a memory sector having fuzzy logic based data will prevent erroneous actions in the downstrem devices which are caused by erroneously input data, in the process of processing data by a conventional programmable logic circuit.