Abstract: The power supply controller serves to distribute electric power to each part of the electronic apparatus for operation, and the electric power can be fed from the AC power source, the fuel cell unit and the secondary battery unit. The power supply controller transmits the data signal indicating from which of the AC power source, the fuel cell unit and the secondary battery unit, the electricity is fed, to the CPU via the built-in register. The CPU displays the use status of the AC power source, the fuel cell unit and the secondary battery unit on the LCD via the display controller.

Abstract: An electronic apparatus according to the invention can be powered by a fuel cell unit and secondary battery unit. Power supply management utility executed by a CPU displays the states of use of the fuel cell unit and secondary battery unit. If a predetermined operation is performed in response to the displayed states, using a pointing device, the power supply management utility permits various types of setting related to the use of the fuel cell unit and secondary battery unit to be performed.

Abstract: A hydraulic power generating device includes a main body case forming a flow passage provided with a water wheel chamber between a fluid inlet port and a fluid outlet port, a cover covering the main body case, a water wheel for power generation disposed in the water wheel chamber, a rotor magnet for rotating in cooperation with the water wheel. An ejection port including a groove is formed on the main body case for ejecting fluid toward the blades of the water wheel at a high speed and an protrusion part is formed on the cover for adjusting the aperture area of the ejection port by entering into the groove. Further, a discharge space is formed at a downstream position of the water wheel chamber so as to be in communication with the fluid outlet port, to which fluid after having rotated the water wheel is ejected and a stagnation preventing protrusion part is formed in the discharge space to facilitate flow of air bubbles to the fluid outlet port.

Abstract: A hydraulic power generating device includes a main body case forming a flow passage provided with a water wheel chamber between a fluid inlet port and a fluid outlet port, a cover covering the main body case, a water wheel for power generation disposed in the water wheel chamber, a rotor magnet for rotating in cooperation with the water wheel. An ejection port including a groove is formed on the main body case for ejecting fluid toward the blades of the water wheel at a high speed and an protrusion part is formed on the cover for adjusting the aperture area of the ejection port by entering into the groove. Further, a discharge space is formed at a downstream position of the water wheel chamber so as to be in communication with the fluid outlet port, to which fluid after having rotated the water wheel is ejected and a stagnation preventing protrusion part is formed in the discharge space to facilitate flow of air bubbles to the fluid outlet port.

Abstract: The power supply controller serves to distribute electric power to each part of the electronic apparatus for operation, and the electric power can be fed from the AC power source, the fuel cell unit and the secondary battery unit. The power supply controller transmits the data signal indicating from which of the AC power source, the fuel cell unit and the secondary battery unit, the electricity is fed, to the CPU via the built-in register. The CPU displays the use status of the AC power source, the fuel cell unit and the secondary battery unit on the LCD via the display controller.

Abstract: An electronic apparatus according to the invention can be powered by a fuel cell unit and secondary battery unit. Power supply management utility executed by a CPU displays the states of use of the fuel cell unit and secondary battery unit. If a predetermined operation is performed in response to the displayed states, using a pointing device, the power supply management utility permits various types of setting related to the use of the fuel cell unit and secondary battery unit to be performed.

Abstract: An automatic ice making machine 1 includes an ice tray 2 for making ice cubes, ice separating means 5 for separating ice cubes from the ice tray 2 by turning the ice tray 2, and an ice storage container for storing separated ice cubes. A stepping motor 13 is used for a drive source for the driver unit 5. The automatic ice making machine further includes detecting means for detecting a predetermined position of the ice tray 2; and control means for controlling a drive of the stepping motor 13. When the ice tray 2 is returned to the water supply position, the control means determines a predetermined position of the ice tray 2 by use of a signal from the detecting means, and determines other positions of the ice tray 2 by the utilization of the number of steps of the motor counted from the predetermined position.

Abstract: The mirror-finished silicon surface is brought for pre-processing into contact with the hydrofluoric acid solution, it is NH cleansed, and then it is filmed by oxidation. Otherwise, the silicon surface not mirror-finished is brought for pre-processing into contact with the hydrofluoric acid solution, it is subject to an alkali etching {by a solution of KOH:H.sub.2 O base, NaOH:H.sub.2 O base, NH.sub.4 OH:H.sub.2 O base, or ?NH.sub.2 (CH.sub.2).sub.2 NH.sub.2 !:H.sub.2 O:?C.sub.6 H.sub.4 (OH).sub.2 !base}, it is NH cleansed by the solution of (NH.sub.4 OH:H.sub.2 O.sub.2 base or NH.sub.4 OH:H.sub.2 O.sub.2 :H.sub.2 O base), and then it is filmed by oxidation. In such manufacturing methods the ornamental silicon articles may be processed to their final shape thereafter effecting an oxidation filming. Thus, without using a coloring agent the silicon surface is colored to provide ornamental silicon articles having excellent ornamental properties.

Abstract: A memory device for recording information on a recording medium includes a recording mechanism for recording information on the recording medium. A control device controls the recording mechanism such that information is recorded in a first predetermined arrangement on a first portion of the recording medium and in a second predetermined arrangement on a second portion of the recording medium.

Abstract: An optical disc device includes an optical head for recording/reproducing information to and from an optical disc. The optical disc has two primary recording areas. On a first recording area of the two primary areas, the optical head records information so that the linear density of information is maintained constant. On a second recording area of the two primary areas, the optical head records information so that the spacing between adjacently recorded information increases with increasing radial position of the head or the recording position is further removed from the center of the optical disc. A substitute area is allocated such that the optical head records information in this substitute area when a defective memory portion portion is detected in the first and/or the second recording area during production or recording.