Accession Number : ADD007534

Title :   Digital Interface Circuit for Control of Pressure Scanner.

Descriptive Note : Patent Application,


Personal Author(s) : Chappell,J , Jr

Report Date : 26 Jul 1979

Pagination or Media Count : 21

Abstract : Digital interface circuitry links a number of solenoid-driven, multiple-port, single-transducer pressure-scanning devices to a digital data acquisition microprocessor system having a random access interface which directs operation of the microprocessor CPU. Pulses from the CPU are utilized by the digital interface to step the scanning solenoid and command the CPU to scan the current inputs from the pressure devices. The digital interface receives a digital signal from a binary encoder when the pressure scanning system has reached the last active pressure port and then returns the scanning system to home position and inputs the next user command to the CPU. (Author)

Descriptors :   *Patent applications, *Microprocessors, *Circuit interconnections, *Pressure transducers, Control systems, Digital systems, Scanners, Data links, Solenoids, Multichannel, Random access computer storage, Interfaces, Signal processing, Central processing units, Input output processing, Coders, Binary processors

Subject Categories : Electrical and Electronic Equipment
      Computer Hardware
      Test Facilities, Equipment and Methods

Distribution Statement : APPROVED FOR PUBLIC RELEASE