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.

Abstract: The inventive system for controlling a working shaft includes a layout for the time to number conversion, wherein a divider is provided to divide with use of a pulse rate outputted from the memory storage, and the shaft driver is operated by output from such a divider and is thereby controlled with use of the data stored in the memory storage. Concurrently, by introducing the counter outputs indicating the time scaling into the addresses of a memory sector, the memory sector is arranged to output varying speed data corespondent to the time scaling data. Thereby trailing actions of the working shaft to trace a given locus are determined by data stored in the memory storage, which enables a complex real time control to be feasible by the inventive simple control system, wherein, as required, a change in the control specification is simply made by a change of data in the memory storage.