Abstract: A keyboard includes a keyboard body, a plurality of keys arranged in rows and columns, and switching elements for turning switching elements ON and OFF in response to operations on the plurality of keys. A special key among the plurality of keys has a keytop which is at least a stroke length of the special key higher than keytops of keys arranged in a row in which the special key is located.

Abstract: A memory stores a vehicle identifier code which enables identification of a vehicle carrying the same type of electronic control unit (ECU) correspondingly to an ECU identification code (ECU-ID) and display means for displaying the vehicle identifier code is displayed on the basis of the ECU-ID provided by an ECU, and a predetermined fault diagnostic program corresponding to the vehicle identifier code is selected and initiated in response to the input of a verification signal of the displayed vehicle identifier code. When a plurality of faulty parts of a vehicle are detected, a priority table is referred to and fault codes corresponding to the plurality of faulty parts are displayed with priority. The necessary specific work procedure is sequentially displayed according to the selected diagnostic program.

Abstract: A keyboard includes a keyboard body, a plurality of keys arranged in rows and columns, and switching elements for turning switching elements ON and OFF in response to operations on the plurality of keys. A special key among the plurality of keys has a keytop which is at least a stroke length of the special key higher than keytops of keys arranged in a row in which the special key is located.

Abstract: A key touch adjusting device wherein the position of a key top is detected, and a resistive force corresponding to that position is generated and applied to the key top. The numeral array for the position data and the force data is stored in a memory. To apply hysteresis to a key force profile curve, a RS flip-flop whose output is inverted by the position data is provided to generate different resistive forces in the key top depressing process and the key top returning process. Also disclosed are a method of comparing an actually obtained profile curve with a predetermined profile curve on a display device by detecting both the position of the key top and the depressing force thereof, a method of achieving hysteresis characteristics by storing a plurality of numeral arrays of the depressing force vs.

Abstract: A portable data processing apparatus such as a personal computer comprising in series a base portion, a top cover portion, a display housing portion, and a keyboard portion. These portions are pivotally connected one after another by first, second and third hinge means, respectively. The first, second and third hinge means are parallel to each other, so that the apparatus can adopt a spread position in which the keyboard portion and the display housing portion are spread to the front and a retracted position in which the keyboard portion overlaps the display housing portion. The top cover portion, the display housing portion, the keyboard portion, and the base portion are folded in a face-to-face relationship in the retracted position.

Abstract: A write control method for writing optical disk data wherein pits are written by a write signal composed of mark signal parts and space signal parts, and a length of each pit represents the optical disk data, comprising the steps of: converting the mark signal parts to pulses and generating a series of pulse trains which correspond to lengths of the mark signal parts, respectively; controlling a lengths and/or amplitude of each of the pulse trains in accordance with a length of the space signal part immediately before the mark signal part; and applying successively the controlled pulse trains to a laser irradiation device so that the pits are written.

Abstract: A push switch includes a support, a switching-element assembly arranged on the support, and an actuator assembly arranged on the switching-element assembly. The switching-element assembly includes first and second contacts vertically arranged, with the second contact being elastically movable toward the first contact and making contact with the first contact when depressed by the actuator assembly. The basic actuator assembly includes an airtight enclosure of an elastic film having a domed shape and a gas enclosed therein, so that the bottom surface of the airtight enclosure depresses the second contact by a depression force onto the top surface thereof.

Abstract: A magnetic bubble memory device comprises a magnetic bubble memory chip, a unit for generating a bias field, a magnetic shield, and a unit for compensating the bias field, wherein the thermodependency of the bias field is compensated to approximate that of the operation characteristics of the memory chip over a wide temperature range, thereby providing a wide region in which operation is ensured.

Abstract: A method of testing bubble memory devices each having a plurality of minor loops, the method being useful for detecting defective minor loops in a short time. In this method, data to be written in and/or data to be read out is divided into and stored as a plurality of blocks, the bubble memory device is sequentially operated under driving magnetic field and/or bias magnetic field conditions different for every block, and a defective minor loop or loops are detected by comparing readout data with write-in data.

Abstract: A magnetic bubble memory device with major/minor loops includes at least one boot loop and a plurality of minor loops. Data stored in the boot loop in the form of bubbles are controlled by the reading out of the data independently from the minor loops. Header data are stored in the boot loop. Faulty loop data of the minor loops are stored in the minor loops with a certain positional relationship based on the header data. This results in allowing the device to be applied to a memory having a larger capacity, a higher production yield, and a high-speed detection time for faulty loop data.

Abstract: In order for the temperature dependence of the strip out field of a magnetic garnet crystal film (54) to match the temperature dependence of the residual magnetization of a permanent magnet (56) for applying a bias magnetic field in a magnetic bubble memory chip (2) after conductor paterns are formed thereon, it is necessary that the temperature coefficient of the collapse field of the magnetic garnet crystal film (51) be from 0.01 to 0.04%/.degree.C., in terms of an absolute value, greater than the temperature coefficient of the above-mentioned residual magnetization (56). The present invention achieves this by increasing the degree of substitution of Lu ions for Fe ions in the octahedral sites constituting the unit lattice of the magnetic garnet crystal. As a result, an operating temperature range about twice as wide as the conventional operating temperature range is ensured.

Abstract: Disclosed herein is a method of testing a magnetic bubble device which guarantees allowable variation ranges for a variety of signal components of input signals applied to a magnetic bubble element when the magnetic bubble device is to be energized. A variety of signal components are varied in a testing cycle for writing, reading and collating information, whereby a plurality of combinations of the variety of signal components are obtained. The obtained input signals are continuously applied to the bubble element to effect the test.

Abstract: A magnetic bubble memory device which comprises special minor loops for storing address information regarding spare minor loops corresponding to defective regular minor loops. The structure of the bubble transfer or reproducing gates corresponding to said special minor loops is different from that corresponding to ordinary minor loops.