A computer, for use with a machine tool, can make any of a number of calculations involving ratios between two operands to determine the angular velocity of the spindle of the machine, the velocity and position of a movable member such as a carriage, and the ratio between two velocities. Any of such calculations is selected by means of a selector switch and a second selector switch is settable to select a time base for the calculation. The operands are represented by pulses produced by transduce...

A ship mounted stabilizer roll tank is instrumented to generate signals icative of the tank moment. The ship is also instrumented to generate signals indicative of its actual roll. The measured tank moment is weighted to yield a signal indicative of the difference between the actual stabilized roll and the estimated unstabilized roll.

A computional device for use in planning or constructing optimum balanced menus using a set of bar vectors consisting of bars strung on a string, the bar vectors being longitudinally slidable in slots in a board, which defines a field for computation with said vectors.

An electronic computer having an arrangement for shifting the characters stored in selected registers of the memory is disclosed, wherein the shift of the characters is controlled by an instruction causing a control unit to select the register to be shifted and to activate the arrangement. The arrangement comprises a one-character register which is first connected by the control unit with the last significant stage of the selected register for exchanging the characters stored therein. The one-ch...

A computer and a method for sailing a boat to windward to obtain maximum velocity made good. A solution algorithm permitting linear relations and a single multiplier in computing velocity made good, with apparent wind speed and angle and boat speed as the data sources.

This disclosure relates to a portable solid-state device for measuring and indicating physical exercise achievement attained through exercises, for example, walking, running and/or jogging in place or over a distance course in accordance with a predetermined exercise regimen. The device includes a digital computer to which is fed the output from an electromechanical sensor adapted to generate an electrical impulse in response to each step taken by an individual while walking, running or jogging ...

Hardware registers which are addressed in the same manner as the main core memory and exchange data with external devices. The computer has no dedicated registers used as the accumulator, program counter and program counter save. Rather, addressed registers in the main core memory are used for these functions. Preferably, there are a plurality of each group comprising a dedicated computational machine. The computational machine which is being operated is specified by a dedicated machine pointer ...

An electrocardiac computer for determining and displaying the existence of certain abnormalities in ECG complexes. The ECG signal input is processed electronically to recognize and indicate the occurrence of excessively wide Q-R-S events within the ECG complexes and to total the number of such occurrences during a period of time, and to determine and subsequently display the level of elevation or depression, slope, shape and integral of the S-T segment portion of each ECG complex containing a no...

An outer annular reference scale defines 360.degree. of angular orientation, and two cursors are rotatably mounted coaxially in centered relationship with respect to the annular scale, each cursor including an index which can be aligned with any particular angle of orientation. An eccentric wind vector device is slidably and rotatably mounted on one of the cursors and a projecting pin which is slidably received in a slot in the other of said cursors. Gear means is provided on the annular scale a...

A surveillance computer maintains track simultaneously on a number of tars in the field of view of a surveillance device for enhancing initial detection and observation of aircraft targets. The computer is responsive to outputs from a surveillance device, such as an infrared scanning system. These outputs are repetitive electronic signals indicating that a target is present and provide the target's azimuth and elevation coordinates in digital format.