Abstract: A description is given of two methods of checking the functional capability of electrical connections between address lines of a printed circuit board of a memory module and address line contacts of an integrated semiconductor memory chip mounted on the printed circuit board. Ruptured solder contacts are conventionally examined optically or investigated by electrical resistance measurements; however, the latter do not work in the case of memory modules with a number of semiconductor chips, the pin contacts of which are connected in parallel by the address lines. The methods make it possible to locate interrupted contacts on individual address lines by the indirect use of a write-read access to the semiconductor memory chip, specifically utilizing the misrouting of writing and reading commands produced by defective contact connections.

Abstract: A test circuit for testing an integrated circuit, includes a test signal input for receiving a test signal from the integrated circuit and a reference signal input for receiving a reference signal. A comparator is in communication with the test signal input and with the reference signal input. The comparator is configured to provide, at a comparator output, an error signal if a comparison between the reference signal and the test signal indicates an error. The error signal, if present, is stored in an error memory, in communication with the comparator output.

Abstract: Signal transit times on printed circuit boards which are equipped with all the passive components but without any active components can be determined using automatic standard test equipment composed of a standard test unit and a performance board with fittings attached thereto. In that first, using a standard routine of the test unit, a transit time is measured on the performance board from the CIF connector as far as the fitting, then a printed circuit board is plugged into the fitting location determined for it and then the sum transit time of the CIF connector is measured as far as the landing pad on the printed circuit board. By forming differences between the two measured values, the transit times on a printed circuit board can be measured with a high degree of precision with the automatic standard test equipment used in standard module testing technology.

Abstract: A computer system (2) which has at least one data defect memory (4), at least one address defect memory (5) and also a test program is connected to a memory module (7) which has a memory space with defect-free and defective memory cells, a plurality of data lines and also a plurality of address lines. The addresses of the defective memory cells in the memory space and also the data lines which are connected to the defective memory cells are determined from the information items of the address defect memory (5) and also from the information items of the data defect memory (4).

Abstract: An ink application device for tattooing or for making permanent make-up includes a handle, a needle drive, a needle, a needle nozzle and a protective cap. The device further includes at least two modules releasably connected to one another. One of the modules is formed as a reusable base module with an integrated needle drive, and the other module is a sterilized disposable module in which all components of the manual device capable of being infected by bodily fluids of a customer are integrated. The device can be constructively divided into two or three separate modules: a basic module, a disposable or hygienic module and an optional ink module. The basic module corresponds to the handle that includes the needle drive and is designed such that the hygienic module can be safely attached and connected to the integrated needle drive.

Abstract: A test device for dynamic memory modules is described and has an electronic test unit for generating test signals. Accordingly, the electronic test unit has at least one electronic component for generating the test signals, and is configured for use on a personal computer mother board and contains at least one memory controller.

Abstract: A method is described for local etching of surfaces. The method includes the steps of providing a surface, providing an etchant, and providing a device for supplying and extracting the etchant. The device contains two cylindrical lines of different cross-sectional areas, of which the cylindrical line with the smaller cross-sectional area is guided inside the cylindrical line with the larger cross-sectional area. An etchant is fed through the inner line to the region of the semiconductor wafer that is to be etched, and the etchant that spreads out beyond the region of the surface that is to be etched is extracted through the outer line. The cross-sectional area of the outer line is less than or equal to the area of the region of the surface which is to be etched.

Abstract: An ink application device for tattooing or for making permanent make-up includes a handle, a needle drive, a needle, a needle nozzle and a protective cap. The device further includes at least two modules releasably connected to one another. One of the modules is formed as a reusable base module with an integrated needle drive, and the other module is a sterilized disposable module in which all components of the manual device capable of being infected by bodily fluids of a customer are integrated. The device can be constructively divided into two or three separate modules: a basic module, a disposable or hygienic module and an optional ink module. The basic module corresponds to the handle that includes the needle drive and is designed such that the hygienic module can be safely attached and connected to the integrated needle drive.

Abstract: An ink application device for tattooing or for making permanent make-up includes a handle, a needle drive, a needle, a needle nozzle and a protective cap. The device further includes at least two modules releasably connected to one another. One of the modules is formed as a reusable base module with an integrated needle drive, and the other module is a sterilized disposable module in which all components of the manual device capable of being infected by bodily fluids of a customer are integrated. The device can be constructively divided into two or three separate modules: a basic module, a disposable or hygienic module and an optional ink module. The basic module corresponds to the handle that includes the needle drive and is designed such that the hygienic module can be safely attached and connected to the integrated needle drive.

Abstract: A basketball game which can be played in bed by a sick person for exercise. The basketball hoop is secured to the backboard by use of integral end supports which fit into spaced spring-like fingers. The back of the hoop has a downwardly extending integral support which prevents the hoop from falling below a horizontal position perpendicular to the backboard. The hoop has a slot in the front and the net is slit so that a ball attached to a line can pass through the hoop and the line can pass through the slot and slit so that the player can retrieve the ball. The backboard is supported by a base which has frontward extending pieces that will fit between a mattress and spring for supporting the backboard and hoop in an upright position.