Provided is a computer. The computer includes: a plurality of parts including heat-generating components that generate heat during operation; a case in which the parts are installed; and one or more heat-dissipating plates separated from the case by a predetermined distance and facing the case; wherein the heat-generating components include a central processing unit and a power supply, and the central processing unit and the power supply are each thermally connected to the heat-dissipating plate...

A low cost computer is suitable for small size configuration. Casings 4 and 32 are formed by aluminum, which is a heat radiating material, and CPUs 6 and 36, hard disk devices 8 and 38, control ICs 40 and 42 and a memory IC are mounted on the casing 4 directly or by the heat radiating material. The casings 4 and 32 are utilized as heat radiators, thereby making the entire computer a smaller size.

Disclosed is a technique for controlling the format of a number to be read out of a store register in such a manner that symbols can be interlaced with the number. Two registers are used, one register containing the number and the other, the symbols. The two registers are read into a single register which then contains the appropriate symbol-number combination. Also disclosed are techniques for changing from floating point to fixed point notation and techniques whereby the number of digits which...

A navigational computer for solving wind vector problems including a plurality of rotatable discs having cooperatively arranged wind grid, aircraft grid, and 360.degree. compass rose, for setting and reading air speeds, wind speeds and ground speeds, and for calculating drift angles and the crab angles necessary to compensate for drift. A runway orienter is incorporated in the wind grid and cooperates with the compass rose to indicate the direction of the various legs in airport traffic patterns...

An adaptor (14) for adding electronic components to a computer has been disclosed. The adaptor (14) includes a flexible printed circuit strip (34) having holes (38) in a first end section (36) for receiving a PGA package (16) and conductive pads (66) at a second end section (46) arranged in a predetermined pattern and conductive traces connected to and extending between the holes (38) and pads (66). The adaptor further includes a preform (80) having castellations (84) on each edge. The second en...

In this method, a unit (24) is tested by a test instrument (22) with the aid of a master (MC), an intermediate (30) and a slave (SL) computer. The latter connects to the test instrument (22) for sensing its measurements. The method includes the step of dispatching one of a plurality of instruction signals to the intermediate computer (30) from the master computer (MC). Another step is issuing to the slave computer (SL), when it is not halted, a signal to halt from the intermediate computer (30) ...

A tri-property code has been adopted and accordingly combinational and sequential circuits for implementing some arithmetic and logical operations are designed individually then combined into a unit for such operations. Most of the circuits are drawn for the decimal system with general procedures applicable to the other radices.

The present invention provides coupled-type computers wherein a computer can be coupled with computers of the same structure easily, and can be coupled with other computers of the same structure in high density. Computer components such as CPUs or memories are built in a holder made of polyhedron cube. A radio propagation bus space formed by a cavity is provided in the inside of the holder, and a plurality of radio-electric signal interconversion elements provided with a signal identification me...

A portable computer arranged to rest comfortably in the hand has a small display screen. Accelerometers capable of detecting movement of the pen with respect to gravity provide input to a microcontroller which selects a response from a number of viewing modes. The pen may be held in either hand and the output message to the screen will be oriented according to the location of the pen. Full personal digital assistance functionality may be incorporated in a relatively small plastics casing and fun...

A reserve power supply for providing backup power to a computer system includes a first battery and a second battery which are switchably interconnected in series or parallel by a switch means. When the batteries are connected in parallel they may be charged by a primary power supply which normally drives the computer system. When the batteries are connected in series they provide power to the computer when the primary power supply fails. This association with the primary power supply and the co...