Abstract: A portable electronic device includes a printed circuit board module including a printed circuit board, a contact switch disposed on the printed circuit board, and a sheet having a first portion attached to the contact switch and a surface of the printed circuit board on which the contact switch is disposed, a folded portion which is extended from the first sheet portion and folded back at an edge surface of the printed circuit board, and a second portion which is extended from the folded portion and attached to a back surface of the surface of the printed circuit board on which the contact switch is disposed, a key module including a key top provided on the sheet opposite to the contact switch, and a pusher which is provided between the key top and the contact switch, and a housing.

Abstract: A microcomputer includes a main oscillator for generating and outputting a main clock signal, a sub oscillator for generating and outputting a sub clock signal, a central processing unit that operates based on the main clock signal, a signal output circuit that operates based on the sub clock signal and outputs a timing signal at a predetermined interval, and a voltage monitoring circuit that operates based on the sub clock signal and intermittently performs a voltage monitoring function in response to the timing signal. The sub oscillator operates independently of the main oscillator.

Abstract: A folding electronic device includes a fixed casing, a movable casing, and a hinge device connecting the fixed casing and the movable casing to allow rotational movement of the movable casing. The movable casing is openable with respect to the fixed casing. The hinge device has an axis extending over a land portion of the fixed casing and a land portion of the movable casing. A projection is provided in any of the following: at least one of end faces of the land portion of the fixed casing and an end face, opposed to one of the end faces, of the land portion of the movable casing. As the movable casing changes from a closed state to an open state, a gap between the projection and an end face opposed to the projection is increased.

Abstract: A voice signal transmitting/receiving apparatus includes: a device body; a speaker array arranged in the device body and including a plurality of arrayed speaker units; and a microphone array arranged in the device body and including a plurality of arrayed microphones. By thus integrating the speaker array and the microphone array, it is possible to improve the operability of a user, to acquaint the user relatively easily with the error in the set position and to make the device compact.

Abstract: In an audio signal transmission/reception device that receives and emits sounds so as to perform transmission and reception of audio signals via communications, user operability can be improved and the size of a main unit can be reduced. It is equipped with a speaker array for arranging a plurality of speaker units, which are arranged on the lower surface of the main unit, and a microphone array for arranging a plurality of microphones, which are arranged on the side surface of the main unit in its longitudinal direction. Legs having hollow structures are attached to the main unit so as to support the main unit at a prescribed height above the mount surface (e.g., the surface of a desk) and to secure good sound emission characteristics of the speaker array.

Abstract: A microcomputer having a sleep mode includes first and second chips received in a single package. The first and second chips are manufactured with different manufacturing processes such that a leak current in the first chip is less than that in the second chip. When a sleep signal for putting the microcomputer in the sleep mode becomes active, data stored in the second chip is transmitted to the first chip. After the data transmission is completed, a power supply voltage supplied to the second chip is stopped and the second chip stops its operation until the sleep mode is released. The data transmission is achieved by digital logic circuits that can be easily redesigned by using a conventional automatic layout generator.

Abstract: A semiconductor integrated circuit includes: a package; semiconductor chips in the package including a signal terminal; and a wiring connecting signal terminals. One semiconductor chip is a test object chip including a probe terminal and a test object terminal. The probe terminal connects to an external terminal for testing the test object terminal. The test object chip further includes: a common wiring for connecting the probe terminal and the test object terminal; a first switch for connecting/disconnecting the probe terminal and the common wiring; a second switch for connecting/disconnecting the test object terminal and the common wiring; and a test signal interrupting element for interrupting the test signal to be inputted into an input circuit of the probe terminal.

Abstract: A microcomputer includes a main oscillator for generating and outputting a main clock signal, a sub oscillator for generating and outputting a sub clock signal, a central processing unit that operates based on the main clock signal, a signal output circuit that operates based on the sub clock signal and outputs a timing signal at a predetermined interval, and a voltage monitoring circuit that operates based on the sub clock signal and intermittently performs a voltage monitoring function in response to the timing signal. The sub oscillator operates independently of the main oscillator.

Abstract: A microcomputer having a sleep mode includes first and second chips received in a single package. The first and second chips are manufactured with different manufacturing processes such that a leak current in the first chip is less than that in the second chip. When a sleep signal for putting the microcomputer in the sleep mode becomes active, data stored in the second chip is transmitted to the first chip. After the data transmission is completed, a power supply voltage supplied to the second chip is stopped and the second chip stops its operation until the sleep mode is released. The data transmission is achieved by digital logic circuits that can be easily redesigned by using a conventional automatic layout generator.

Abstract: A semiconductor integrated circuit includes: a package; semiconductor chips in the package including a signal terminal; and a wiring connecting signal terminals. One semiconductor chip is a test object chip including a probe terminal and a test object terminal. The probe terminal connects to an external terminal for testing the test object terminal. The test object chip further includes: a common wiring for connecting the probe terminal and the test object terminal; a first switch for connecting/disconnecting the probe terminal and the common wiring; a second switch for connecting/disconnecting the test object terminal and the common wiring; and a test signal interrupting element for interrupting the test signal to be inputted into an input circuit of the probe terminal.

Abstract: A vane pump has a casing, a rotor rotatably mounted in the casing, and a plurality of vanes mounted in the rotor and projecting variable amounts from an outer peripheral wall of the rotor. The outer peripheral wall of the rotor and an inner peripheral wall of the casing are shaped cylindrical. The rotor has an axis of rotation offset from the center of the inner peripheral wall of the casing. Stationary cams concentric with the inner wall of the casing act on proximal ends of the vanes, so that distal ends of the vanes revolve in close vicinity of but not in pressure contact with the inner wall of the casing.

Abstract: A mixer-granulator drier comprises a mixer-granulator having main and auxiliary mixing-granulating blades mounted in a vessel forming the main body so that both the blades are revolved to accomplish mixing and granulation of powders as desired. The bottom plate of the vessel is formed with a number of slots, a valve mechanism for opening and closing the slots are located adjacent the slots, and a drying-air supply device is provided for supplying the vessel with drying air through the slots. This combination apparatus performs mixing, granulation, and drying of various drugs, foods, chemicals, etc., in a single vessel automatically and continuously. The apparatus is easy to disassemble for thorough cleaning and sterilization.