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| Number | Title | Issue Date |
| 5541367 | Printed circuit board having a land with an inwardly facing surface and method for manufacturing same A printed circuit board is provided having one or more lands formed upon the outer surface of the printed circuit board. Each land is adapted to receive a surface mount component and, specifically, leads extending from the surface mount component. Each la... | 07/30/1996 |
| 5519585 | Sandwiched insulative/conductive layer EMI shield structure for printed circuit board Using a thermal/vacuum forming process a thin film polymer substrate is shaped into a generally shroud-like EMI shield body which forms a portion of a multi-layer EMI shield structure removably secured to a side of a printed circuit board disposed within ... | 05/21/1996 |
| 5517671 | System for designating a plurality of I/O devices to a plurality of I/O channels and connecting and buffering the plurality of I/O channels to a single system bus A system for connecting a plurality of input/output (I/O) channels to a single computer system bus. A system controller establishes priority among the I/O channels competing for access to the system bus. A plurality of I/O channel bridges are connected to... | 05/14/1996 |
| 5513340 | Video memory clock selection circuit and method Disclosed are a configuration-dependent video memory clock selection circuit and method for a computer system. The selection circuit operates in conjunction with a removable video memory module. The module comprises: (1) a circuit board capable of inserti... | 04/30/1996 |
| 5513319 | Watchdog timer for computer system reset A watchdog timer circuit of the present invention monitors a computer system (S) during diagnostic testing and resets the system when it is nonfunctioning. A real-time clock (RTC) (21), programmed by a central processing unit (CPU) (29) to run for a perio... | 04/30/1996 |
| 5504689 | Apparatus and method for testing computer bus characteristics Disclosed are an apparatus and method preferably for testing personal computer (PC) bus transmission line characteristics. The apparatus comprises: (1) a plurality of transmission line segments having different physical dimensions, each of the plurality o... | 04/02/1996 |
| 5502887 | Chip extraction tool Apparatus and method is disclosed for removing an integrated circuit chip from a socket in a printed circuit board without damaging the chip or other components on the circuit board. The tool has a pair of arms slidably attached to a base. The lower ends ... | 04/02/1996 |
| 5501518 | Hand-held keyboard tester A hand-held keyboard test unit includes an enclosure that fits easily within one hand, a keyboard connector for receiving a keyboard connector, a controller programmed solely to execute tests of the keyboard, a digital display to indicate the status of th... | 03/26/1996 |
| 5500789 | Printed circuit board EMI shielding apparatus and associated methods Transverse electromagnetic mode (TEM) radiation emitted from a side edge portion of a circuit board substrate portion during operation of the circuit board is intercepted by a specially designed shield structure carried by the substrate side edge portion,... | 03/19/1996 |
