A hierarchical organization of programmable logic arrays permits the control of microprocessor functions to be achieved in a way which allows otherwise wasted clock time to be used. The mostly independent operations of the several PLA's is organized by "handshake" signals from the latches of one PLA to those of another via AND circuits operative to selectively enable clock signals, in some instances, and data in other instances, to be applied to the latches. The use of the AND circuits enables r...

A program reading apparatus in a knitting machine including a movable reading head adapted to scan a program carrier having thereon patterning instructions for control of the pattern to be knitted on the machine. Means are provided therein for preventing rebound of the reading head upon arrival at or return to its starting position, such means being operated by the momentum of the reading head upon reading head arrival or return to momentarily arrest the reading head at the starting position.

A number of values of a variable defining a program of operations are settable by means of three potentiometers, connected to a controlled apparatus, which control respectively the initial, final, and rate of change of the variable, each potentiometer having an associated plate one edge of which indicates the value set against a scale. The plate edges form a curve of a graph indicative of the program. In a modification a plurality of linear potentiometers are located at different positions along...

Program schedule information recorded on film is converted into video signals by two video record players for transmission with audio signals through a selected channel to cable television subscribers. The film is incrementally advanced in reverse directions for alternate display of different information recorded on separate frames of the film under control of a sequence controller operating through relays to effect synchronized operation of the video and audio tape players.

A method and apparatus for use in electronic computer for altering a stored program. The deletion of an instruction from a main memory storing it results in a compression of the program that included the deleted instruction in order to conserve memory space. The insertion of an instruction in a program stored in a main memory results in the shifting of subsequent instructions stored therein. The memory may be divided into arbitrary sections in response to an instruction enabling the search of a ...

The present invention concerns with a so-called program-controlled camera where only one different combination of diaphragm aperture and shutter time value is determined based on a different object brightness. Particularly in the program-controlled camera where the object brightness is measured at the full open aperture and then combined with the preset value of film speed to derive a difference between the full open aperture and the effective diaphragm value, in accordance with which the shutte...

An electronically actuated system for a control clock device is provided with an instrument panel arranged in such fashion that an operator having virtually no familiarity with the technical aspects of the system can set up a program of activity, such for example as the playing of various melodies on a carillon on different days of the week, and varying them automatically from day to day. The panel is provided with controls in the form of push buttons, dials and lights, appropriately labeled, a ...

An electronic control system for controlling a sequence of operations on products moving on an indexing conveyor. The electronic control system is illustrated as controlling a sequence of operations, carried out at various work stations, on cartons in a packaging machine, such as filling operations, sealing operations, and clean-in-place operations on carton filler heads. A limit switch carton detector detects the presence or absence of cartons on the indexing conveyor of the packaging machine a...

A special branch instruction used in a computing system serves as a conditional branch or as an unconditional branch as determined by the state of an internal register. This special branch instruction is used for conditional branching within or at the end of a program loop and for unconditional branching outside of such a loop.

A program EE camera comprises a stop control mechanism for defining the stop extent with a relatively low precision in a few stages according to an electric signal from a light-measuring circuit and a shutter speed control mechanism for controlling a shutter speed in accordance with the stop extent defined by the stop control mechanism.