Abstract: System and method of designing and developing table translation software in which an operation is performed on input data provided in the form of tables, and data resulting from the operation is also provided in the form of tables. The system includes an item input section for inputting items representative of attributes of data, a relation input section for inputting inter-item relations for the inputted items, an item and relation managing section for holding and supplying the inputted items and inter-item relations thereof, and a relation indicating section for indicating the items and the inter-item relations thereof held by the item and relation managing section. Software is designed and developed with the functions of the software being handled as translation processes of the tables.

Abstract: A first power supply and output circuit and a second power supply and output circuit for use with a microphone unit having an electrostatic transducer and pre-amplifier transistor is disclosed. DC power to the microphone unit is supplied from the first circuit through a single core cable. An output signal from the microphone unit also passes through the cable to an output transformer in the first circuit. The first circuit has a first battery and the second circuit a DC power source which, when connected to the first circuit, stops drain on the first battery.