A digital computer adapted to perform vector and matrix operations without detailed programs is disclosed. The dimensions of matrices or of vectors are entered as codes in reserved fields in successive instruction words and the computer's processor is made to be responsive to such codes to perform any required operations on the matrices or vectors to be processed.

An educational game relating to computers comprises a data-chip and a control-chip for each player, representing data and control signals respectively. The game further includes a board marked with a path of movement for the data-chips, which path includes AND-gates, OR-gates, INHIBIT-gates, and a number of other digital devices such as delays, diodes, inverters, counter, memory drum, and the like. The game further includes binary dice serving as a random number generator which are thrown by eac...

In a memory protective system for computers operable under master and slave modes which has a first register (denoted as a P register) storing information conducive to the determinatisn of an execution address of said master mode and a second register (denoted as a R register) storing information conducive to the determination of an execution address of said slave mode, the improvement comprising means for switching said second register to said first register when an information for changing the...

An anti-theft device for securing personal computers to a table, bench or like top is disclosed. The device employs a strong flat bar affixed to the bottom of the table or bench top, and two units that are threaded to the bar and extend through the table top. These units have bolts that project horizontally into the computer cabinet on opposite sides of the cabinet. One of the two units is an L-shaped bolt one end of which projects into the cabinet and the other end is treaded into the bar. The ...

Several modular circuits are releasably connected to one another and with the plug which supplies AC power to a computer or the like. A first circuit rectifies the AC voltage and applies a DC voltage to one side of a motion sensing circuit, the opposite side of which is connected to a third circuit containing a portable, DC power supply. The third circuit include an electrically operated alarm, and an electronic valve, which normally maintains the alarm deenergized. The motion sensing circuit co...

An adapter body for connection between an appliance, such as a personal computer, having a recessed male plug, comprising a body having a recessed male electrical connection and a boss portion forming a female electrical connection and a plurality of surface female plugs, the boss portion female plug being particularly configured for mating with the recessed male electrical plug of the appliance and the recessed male plug being configured to receive an extension cord plug, the surface female plu...

A diagnostic system comprises a plurlity of remote computers connected to a switched telephone network to which a diagnostic center and an adminstrator's station are also connected. The diagnostic center includes a data processor for preparing a diagnostic file for each of the remote computers and storing it into a first memory. Each diagnostic file contains a remote computer's identification, a remote computer's telephone number, diagnostic commands, expectation values and an administrator's te...

A portable electric appliance is provided with a solar energy accumulator. The accumulator is integrally mounted on the electric appliance when the appliance is desired to operate or be transported. When the portable electric appliance is not used, the accumulator is removed from the appliance and moved to a bright place.

An adjustable desk having two centrally located motorized platforms, one in front of the other, with the front platform adapted to support a keyboard and the rear platform adapted to support a video display terminal. Both platforms operate independently of the other. Each of these platforms can have its elevation adjusted over a wide range. The platform for supporting a keyboard may also have its tilt adjusted through a motorized means. The platform for the keyboard comprises three planar sectio...

A cooling system for cooling electronic components mounted in a cabinet of a computer includes an air circulation device mounted in the cabinet. The air circulation device draws cool, outside air through an air inlet in the cabinet and circulates the cool air over the electronic components. After passing over the electronic components, the air is drawn into an inlet of the fan and exhausted into a diffuser. The diffuser interconnects an outlet in the fan to an air outlet in the cabinet. The diff...