A computer carrying case having internally contained non-reflective folding panels which combine with base and cover portions of the case to form a shield enclosure for a portable computer housed within the case. The shield enclosure excludes most extraneous light and glare and reduces unwanted observation of a viewing screen incorporated in a cover of the computer cover when contained within the shield enclosure. Recessing the viewing screen within the shield enclosure permits the screen to be ...

A testing system and method for benchmarking computer systems. The system includes a store containing a scalable set of tasks to be performed to produce a solution in ever-increasing degrees of resolution as a larger number of the tasks are performed. A timing and control module allots to each computer a fixed benchmarking interval in which to perform the stored tasks. Means are provided for determining, after completion of the benchmarking interval, the degree of progress through the scalable s...

In order to protect computers and the like against the pick up, the recording and the unauthorized use of data from the computers during the working thereof, and to protect them against high energy transient disturbances taking place on the main A.C. power line, a filter unit (1) is foreseen comprising a plurality of sections (19) comprising inductances (21) and capacitances (23), between which it is interposed at least a gas-discharge surge arrester (25) and varistors (27), and masking unit (3)...

Longitudinally extended printing of all types of computer output for reading in the direction in which the paper was caused to flow during printing is provided for instead of the conventional printing for reading across such direction. Existing hardware is utilized, with the imprinting characters having their reading axes disposed transversely to the axis of paper flow. Imprinting of the advancing print-out form is by means of a succession of transverse rows of the transversely orientated charac...

A tile array computer is disclosed. A tile array computer is formed by individual tiles, each typically containing a display surface, a processor, memory, and communication devices for providing communications with adjoining tiles or the support structure upon which the tiles are placed.

An attachment device is provided for a handheld computer. The attachment device includes a first structure that attaches into a back face of a handheld computer. A second structure is moveably coupled to the first structure, and is positionable against the front face of the handheld computer. The first structure may couple to the back face of the handheld computer using a spring-loaded latch mechanism or other detachable coupling. An embodiment provides that the attachment device is electronical...

A method and implementing electronic tri-plate connection system are provided including a nested set of RF Faraday cages within the system with integrated circuit packages containing the core drivers and receivers as the innermost Faraday cage, and additional Faraday cages being implemented at each outward level through card, board, backplane and unit level and into the network level. There is no distinction between power ground, signal ground or shield ground. All grounds throughout the system ...

An indirect addressing network for a program controlled digital data processing system is disclosed. The digital data processing system includes a first set of storage devices used as directory number storage registers, and a second set of storage devices used as equipment number storage registers, all of which are indirectly addressed. The indirect addressing network includes control gates connected to each of the storage devices for partially addressing each storage device. A special gate, hav...

An electronic billing and accounting machine having a program memory means for loading one or more programs into the program memory, and means for requesting and identifying particular programs and causing execution of the particular programs once identified in the program memory.

A calculator comprising a conventional cardinal calculator having an input keyboard unit, a central processing unit input and output, and an output display unit wherein the connections on the central processing unit input from all terminals on the input keyboard unit are shifted down to that of the next lower numeral in the central processing unit input. The connections on the output display unit from all terminals on the central processing unit output are shifted up to that of the next upper nu...