Abstract: A drive box includes a power source, a drive group which is constituted of a plurality of storages, a canister which can be replaced, and a midplane which couples the canister and the drive group, wherein the midplane includes a storage apparatus having a memory unit in which data related to at least the drive group is stored, the canister has a communication channel which is coupled to at least one of the plurality of storages, the canister performs I2C communication with the storage apparatus, power is supplied to the canister from the power source by a first supply line which is a power line passing through the midplane, and power is supplied to the storage apparatus from the power source via the canister.

Abstract: An instrument panel with meters/indicating lamps and their drive circuits implemented therein, a centralized control circuit board provided with control circuits for vehicle-mounted electric equipment including the meters/indicating lamps, and an electric junction box for distributing power sources and input/output signals for the vehicle-mounted electric equipment and for integrating ground wires, are gathered and integrally united. Electric wiring and installation of electric instruments such as an instrument panel in the dashboard portion of an automobile are facilitated.

Abstract: A digital/analog indication unit which is capable of performing both digital and analog indications of detected value such as vehicle speed or the like, respectively by displaying numerals and rotating an indication needle to a scale, wherein there is no discrepancy between the digital indication and analog indication.

Abstract: A movement for instrument is of thin construction. A rotatably supported shaft extends through a thin magnet and supports the magnet on it. The magnet radiates a magnetic field that varies in magnetic field strength in accordance with a sine function along a circular path about the shaft. A signal generator provides a first current and a second current. First straight conductors are disposed in a first direction parallel to the surface of the thin magnet, are laid in the magnetic field of the magnet, and are supplied with the first current through them. Second straight conductors are disposed in a second direction parallel to the surface of the magnet and transverse to the first direction. The second conductors are laid in the magnetic field of the magnet and are supplied with the second current through them. Thus, the magnet is angularly positioned in accordance with the magnitudes and directions of said first and second currents, thereby causing the pointer to indicate the angular position of the magnet.