Abstract: An electronic apparatus including: a first case; a second case having an inclined arm fitting part; a hinge enabling the first and second cases to rotate around a first rotational axis; a secured piece secured to the hinge and the second case, the secured piece having an inclined arm part that fits into the inclined arm fitting part; and an inclined arm securing member configured to secure the inclined arm part fit to the inclined arm fitting part by insertion into a pair of gaps provided between the inclined arm fitting part and the inclined arm part.

Abstract: A semiconductor integrated switching apparatus includes a space switch, a control memory, an output control circuit, an expanding circuit, an address comparator, and a maintenance reading circuit, all of which are integrated on a single substrate. The control memory controls switching operation of the space switch. The output control circuit transmits a highway signal selected by the space switch. The expanding circuit expands the capacity of the space switch. The address comparator reads out a written address signal upon writing thereof and compares a readout address signal with the written address signal. The maintenance reading circuit reads out an operation status signal of the space switch.

Abstract: A method and apparatus for automatically measuring the distribution of reflectance of coals is given, which comprises the steps of vertically projecting light to samples of coals on a movable stage, allowing a photodetector to receive said light through a microscope as the stage moves, thereby measuring the reflectance of the samples at a great number of points to obtain the distribution of reflectance, and determining the property of the coals from this distribution of reflectance.