Oki Electric Industry Co., Ltd.

Taishin Electric Ind. Co., Ltd.

Toshiba Medical Supply Co., Ltd.

Jiro Kobayashi

Satoru Suwabe

Koji Tanagawa

Nobuyoshi Yanagita

Tetsuya Tokushige

Syunji Abe

Kenzo Eguchi

It is an object of the present invention to provide a one-chip microcomputer which permits the access time for an external memory to be equal to that for an internal memory. The one-chip microcomputer 10 includes an internal ROM 11, control circuit 12, output terminals 13, input terminals 14, control circuit 15, selector 16, instruction register 17, delay circuit 18, and fetch control signal select gate 19. For selection of the external ROM 30, a control arrangement 20 and a delay circuit 18 are employed in one embodiment to adjust the time at which ROM data is fetched by the instruction register 17, based on the delay time for accessing the external ROM 30.

Single-chip microcomputer using adjustable timing to fetch data from an

A CPU core includes an internal resource made up of various kinds of registers, and a controller having a bus control circuit which controls the input and output of data and others among various kinds of buses. A terminal group has a plurality of terminals for interconnecting the CPU core to a peripheral circuit and an external memory. The buses comprise an internal bus to which individual circuits incorporated in the CPU core are interconnected, a data bus interconnected between the CPU core and the external memory for allowing data to be inputted and outputted between the CPU core and the external memory, and a peripheral data bus inerconnected between the CPU core and the peripheral circuit for allowing data to be inputted and outputted between the CPU core and the peripheral circuit. The input and output terminals of all of the circuit portions which constitute the internal resource are interconnected to the internal bus. The bus control circuit has input and output terminals interconnected to the internal bus, data bus, and peripheral data bus for controlling the input and output of data and others among the buses.

Microprocessor system having a single, common internal bus transferring

Microprocessor controlled converter having reduced noise interference

A steam generator is proposed to spray steam in a beauty shop, a barbershop or the like. In the steam generator, a small amount of water is continuously supplied to a heated vapor assembly and is instantaneously converted to steam. A preparation time can be greatly shortened after the vapor assembly is heated. Thereafter, steam can be stably and continuously supplied. Discharge electrodes are arranged in a steam tube extending from the vapor assembly to effectively ionize the steam.

Steam generator

Growing community of inventors

Tokyo, Japan

Jiro Kobayashi