From the bitsavers.org collection, a scanned-in computer-related document. hp :: te :: 165xx :: 16500-97009 16500B 16501A Logic Analysis System Programmers Guide Apr94
Topics: command, output, query, commands, module, status, data, logic, intermodule, mmemory, logic...
Cockpit displays for a Takeoff Performance Monitoring System (TOPMS) to provide pilots with graphic and alphanumeric information pertinent to their decision to continue or abort a takeoff are evaluated. Revised head-down and newly developed head-up displays were implemented on electronic screens in the real-time Transport Systems Research Vehicle (TSRV) Simulator for the Boeing 737 airplane at the Langley Research Center and evaluated by 17 NASA, U.S. Air Force, airline, and industry pilots....
Topics: NASA Technical Reports Server (NTRS), COCKPITS, COMPUTER GRAPHICS, DISPLAY DEVICES, HEAD-UP...
A digital equivalent data system (DEDS) is a system for identifying objects by means of the x-ray fluorescence (XRF) spectra of labeling elements that are encased in or deposited on the objects. As such, a DEDS is a revolutionary new major subsystem of an XRF system. A DEDS embodies the means for converting the spectral data output of an XRF scanner to an ASCII alphanumeric or barcode label that can be used to identify (or verify the assumed or apparent identity of) an XRF-scanned object. A...
Topics: NASA Technical Reports Server (NTRS), DIGITAL DATA, IDENTITIES, ALPHANUMERIC CHARACTERS, CODING,...
The current study is part of a larger NASA effort to develop displays for an engine-monitoring system to enable the crew to monitor engine parameter trends more effectively. The objective was to evaluate the operational utility of adding three types of information to the basic Boeing Engine Indicating and Crew Alerting System (EICAS) display formats: alphanumeric alerting messages for engine parameters whose values exceed caution or warning limits; alphanumeric messages to monitor engine...
Topics: NASA Technical Reports Server (NTRS), DISPLAY DEVICES, ENGINE MONITORING INSTRUMENTS, FORMAT, JET...
Primarily designed to acquire data at steady state test conditions, the system can also monitor slow transients such as those generated in moving to a new test condition. The system configuration makes use of a microcomputer at the test site which acts as a communications multiplexer between the measurement and display devices and a centrally located minicomputer. A variety of measurement and display devices are supported using a modular approach. This allows each system to be configured with...
Topics: NASA Technical Reports Server (NTRS), COMPUTER GRAPHICS, DATA ACQUISITION, DISPLAY DEVICES,...
The goal of the present study was to determine how the multiple, interdependent full-body sensorimotor subsystems respond to a change in gaze stabilization task constraints during locomotion. Nine subjects performed two gaze stabilization tasks while walking at 6.4 km/hr on a motorized treadmill: 1) focusing on a central point target; 2) reading numeral characters; both presented at 2m in front at the level of their eyes. While subjects performed the tasks we measured: temporal parameters of...
Topics: NASA Technical Reports Server (NTRS), IDENTIFYING, HEAD MOVEMENT, LOCOMOTION, BODY KINEMATICS,...
Control of locomotion requires precise interaction between several sensorimotor subsystems. Exposure to the microgravity environment of spaceflight leads to postflight adaptive alterations in these multiple subsystems leading to postural and gait disturbances. Countermeasures designed to mitigate these postflight gait alterations will need to be assessed with a new generation of functional tests that evaluate the interaction of various elements central to locomotor control. The goal of this...
Topics: NASA Technical Reports Server (NTRS), BODY KINEMATICS, HEAD MOVEMENT, LOCOMOTION, MICROGRAVITY,...
Methods of decoding a digital word to display alpha-numeric characters for driving a standard seven-segment LED display have been devised for Omega station identification. The circuit could replace the system now being used in Ohio University's Omega receivers, which lights one of eight LED's to signify the Omega time slot being received. The letters A through H, representing the Omega stations, can be read directly from the seven-segment display.
Topics: NASA Technical Reports Server (NTRS), DIGITAL SYSTEMS, DISPLAY DEVICES, OMEGA NAVIGATION SYSTEM,...
Display format and highlight validity were shown to affect visual display search performance; however, these studies were conducted on small, artificial displays of alphanumeric stimuli. A study manipulating these variables was conducted using realistic, complex Space Shuttle information displays. A 2x2x3 within-subjects analysis of variance found that search times were faster for items in reformatted displays than for current displays. Responses to valid applications of highlight were...
Topics: NASA Technical Reports Server (NTRS), ALPHANUMERIC CHARACTERS, DISPLAY DEVICES, FORMAT,...
The NASA Lewis Research Center is in the process of installing a new data acquisition and display system. This new system will provide small and medium sized aeronautics test facilities with a state-of-the-art real-time data acquisition and display system. The new data system will provide for the acquisition of signals from a variety of instrumentation sources. They include analog measurements of temperatures, pressures, and other steady state voltage inputs; frequency inputs to measure speed...
Topics: NASA Technical Reports Server (NTRS), AERONAUTICAL ENGINEERING, DATA ACQUISITION, DISTRIBUTED...
Information on cockpit display of wind shear information is given in viewgraph form. Based on the current status of windshear sensors and candidate data dissemination systems, the near-term capabilities for windshear avoidance will most likely include: (1) Ground-based detection: TDWR (Terminal Doppler Weather Radar), LLWAS (Low-Level Windshear Alert System), Automated PIREPS; (2) Ground-Air datalinks: Air traffic control voice channels, Mode-S digital datalink, ACARS alphanumeric datalink. The...
Topics: NASA Technical Reports Server (NTRS), AERIAL RECONNAISSANCE, AIR TRAFFIC CONTROL, AIRCRAFT HAZARDS,...
From the bitsavers.org collection, a scanned-in computer-related document. hp :: te :: 166x :: 01660-90902 1660-Series 100-MHz State 500-MHz Timing Logic Analyzers Programming Guide Aug92
Topics: output, command, query, subsystem, data, analyzer, logic, machine, commands, returns, example...
From the bitsavers.org collection, a scanned-in computer-related document. hp :: te :: 165x :: 01652-90903 1652B 1653B Programming Reference Dec89
Topics: command, data, programming, query, subsystem, output, reference, commands, returned, dim,...
A compact graphics terminal for use as the input to a computerized medical records system is described. The principal mode of communication between the terminal and the records system is by checklists and menu selection. However, the terminal accepts short, handwritten messages as well as conventional alphanumeric input. The terminal consists of an electronic tablet, a display, a microcomputer controller, a character generator, and a refresh memory for the display. An Intel SBC 80/10...
Topics: NASA Technical Reports Server (NTRS), BIOMEDICAL DATA, CHARACTER RECOGNITION, COMPUTER GRAPHICS,...
Over the past five years, the Flight Dynamics Division of the National Aeronautics and Space Administration's (NASA's) Goddard Space Flight Center has incorporated computer graphics technology into its operational environment. In an attempt to increase the effectiveness and productivity of the Division, computer graphics software systems have been developed that display spacecraft tracking and telemetry data in 2-d and 3-d graphic formats that are more comprehensible than the alphanumeric...
Topics: NASA Technical Reports Server (NTRS), AERODYNAMICS, COMPUTER GRAPHICS, MISSION PLANNING, REAL TIME...
NCR 315 Computers - National Cash Register Company
Topics: characters, alphanumeric, data, magnetic, cram, ncr, cards, capacity, card, processor, alphanumeric...
A report describes the history and the continuing evolution of an avionic system aboard the space shuttle, denoted the caution and warning system, that generates visual and auditory displays to alert astronauts to malfunctions. The report focuses mainly on planned human-factors-oriented upgrades of an alphanumeric fault-summary display generated by the system. Such upgrades are needed because the display often becomes cluttered with extraneous messages that contribute to the difficulty of...
Topics: NASA Technical Reports Server (NTRS), AVIONICS, HUMAN FACTORS ENGINEERING, SPACE SHUTTLES, WARNING...
A security code system for controlling access to computer and computer-controlled entry situations comprises a plurality of subsets of alpha-numeric characters disposed in random order in matrices of at least two dimensions forming theoretical rectangles, cubes, etc., such that when access is desired, at least one pair of previously unused character subsets not found in the same row or column of the matrix is chosen at random and transmitted by the computer. The proper response to gain access...
Topics: NASA Technical Reports Server (NTRS), ACCESS CONTROL, COMPUTER INFORMATION SECURITY, NUMERICAL...
Five programming techniques used to decrease core and increase program versatility and efficiency are explained. The techniques are: (1) dynamic storage allocation, (2) automatic core-sizing and core-resizing, (3) matrix partitioning, (4) free field alphanumeric reads, and (5) incorporation of a data complex. The advantages of these techniques and the basic methods for employing them are explained and illustrated. Several actual program applications which utilize these techniques are described...
Topics: NASA Technical Reports Server (NTRS), CDC COMPUTERS, DATA PROCESSING EQUIPMENT, ALPHANUMERIC...
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Bauer, F. H.; Moreau, M. C.; Dahle-Melsaether, M. E.; Petrofski, W. P.; Stanton, B. J.; Thomason, S.; Harris, G. A.; Sena, R. P.; Temple, L. Parker, II
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Prior to the advent of artificial satellites, the concept of navigating in space and the desire to understand and validate the laws of planetary and satellite motion dates back centuries. At the initiation of orbital flight in 1957, space navigation was dominated by inertial and groundbased tracking methods, underpinned by the laws of planetary motion. It was early in the 1980s that GPS was first explored as a system useful for refining the position, velocity, and timing (PVT) of other...
Topics: COUNTERMEASURES, GAIT, EYE MOVEMENTS, HEAD MOVEMENT, SPACE FLIGHT, EXTRAVEHICULAR ACTIVITY,...
Compact portable alphanumeric display device can be used with any general-purpose externally-triggered oscilloscope without need for Z-axis modulation. Factors limiting size of display are: output line capacitance, read-only memory speed, and persistence of cathode-ray-tube.
Topics: NASA Technical Reports Server (NTRS), ALPHANUMERIC CHARACTERS, DISPLAY DEVICES, OSCILLOSCOPES,...
From the bitsavers.org collection, a scanned-in computer-related document. sds :: sigma :: btm :: 901679A Sigma5 BTM userGuide feb70
Topics: file, subsystem, specifies, edit, command, program, string, record, user, sequence, edit subsystem,...
From the bitsavers.org collection, a scanned-in computer-related document. hp :: te :: 165xx :: 16550-97000 16550A 100-MHz State 500-Mhz Timing Logic Analyzer Programmers Guide May93
Topics: output, command, subsystem, query, machine, data, analyzer, returns, example, format, example...
An inexpensive data/command entry and CRT display system capable of alphanumeric and graphics moe operation and designed to operate in place of a separate ASCII terminal, is documented. The software to interface this unit to the 6502-based Loran C receiver is also described. The system simplifies receiver operations to a level typical of current avionics systems.
Topics: NASA Technical Reports Server (NTRS), ALPHANUMERIC CHARACTERS, CATHODE RAY TUBES, COMPUTER...
An important consideration when designing the interface to an intelligent system concerns function allocation between the system and the user. The display of information could be held constant, or 'fixed', leaving the user with the task of searching through all of the available information, integrating it, and classifying the data into a known system state. On the other hand, the system, based on its own intelligent diagnosis, could display only relevant information in order to reduce the...
Topics: NASA Technical Reports Server (NTRS), GRAPHICAL USER INTERFACE, HUMAN REACTIONS, HUMAN-COMPUTER...
From the bitsavers.org collection, a scanned-in computer-related document. hp :: te :: 165xx :: 16555-97006 16554A 16555A State Timing Logic Analyzers Programmers Guide Nov94
Topics: output, command, subsystem, query, machine, data, analyzer, returns, format, slist, example output,...
Systems for identifying objects by means of x-ray fluorescence (XRF) of encased labeling elements have been developed. The XRF spectra of objects so labeled would be analogous to the external bar code labels now used to track objects in everyday commerce. In conjunction with computer-based tracking systems, databases, and labeling conventions, the XRF labels could be used in essentially the same manner as that of bar codes to track inventories and to record and process commercial transactions....
Topics: NASA Technical Reports Server (NTRS), DATA SYSTEMS, DIGITAL DATA, IDENTIFYING, ALPHANUMERIC...
From the bitsavers.org collection, a scanned-in computer-related document. hp :: te :: 165xx :: 16151-90907 16515A 1GHz Timing Analyzer Module Programming Reference Sep88
Topics: subsystem, command, waveform, query, output, module, commands, pattern, specifies, label, waveform...
A system is presented which processes FORTRAN based software systems to surface potential problems before they become execution malfunctions. The system complements the diagnostic capabilities of compilers, loaders, and execution monitors rather than duplicating these functions. Also, it emphasizes frequent sources of FORTRAN problems which require inordinate manual effort to identify. The principle value of the system is extracting small sections of unusual code from the bulk of normal...
Topics: NASA Technical Reports Server (NTRS), DOCUMENTATION, ERROR DETECTION CODES, FORTRAN, USER MANUALS...
Experiment computer application software (ECAS) display design and command usage guidelines were developed, which if followed by spacelab experiments, would standardize methods and techniques for data presentation and commanding via ECAS. These guidelines would provide some commonality among experiments which would enhance crew training and flight operations. The guidelines are applicable to all onboard experiment displays, whether allocated by ECAS or a dedicated experiment processor. A brief...
Topics: NASA Technical Reports Server (NTRS), COMPUTER SYSTEMS PROGRAMS, DISPLAY DEVICES, FLIGHT...
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short or there are not enough alphanumeric characters in it
Topic: short or there are not enough alphanumeric characters in it
A method and apparatus is disclosed by which any general purpose external trigger laboratory oscilloscope can be utilized to display alphanumeric characters. Each character to be displayed is composed of a plurality of segments appearing at various segment positions in various segment rows to define a conventional matrix. In between character segments to be displayed, or when no display is desired, the trace is effectively blanked by a vertical clamping voltage so as to position the...
Topics: NASA Technical Reports Server (NTRS), ALPHANUMERIC CHARACTERS, DISPLAY DEVICES, OSCILLOSCOPES,...
Following spaceflight crewmembers experience locomotor dysfunction due to inflight adaptive alterations in sensorimotor function. Countermeasures designed to mitigate these postflight gait alterations need to be assessed with a new generation of tests that evaluate the interaction of various sensorimotor sub-systems central to locomotor control. The goal of the present study was to develop new functional tests of locomotor control that could be used to test the efficacy of countermeasures....
Topics: NASA Technical Reports Server (NTRS), COUNTERMEASURES, SENSORIMOTOR PERFORMANCE, BODY KINEMATICS,...
R&D Report 1976-28 : Hadamard transformation: Assessment of bit-rate reduction methods. C.K.P. Clarke This report is concerned with the bit-rate reduction of signals produced by Walsh-Hadamard transformation of PCM television signals. The main characteristics of the transform signals are outlined and the methods of linear and non-linear coding used to reduce their bit rate are described. It was found that, with linear coding, a slightly higher bit rate is required to describe the transform...
Topics: transform, bits, coefficients, signal, coding, hadamard, errors, signals, impairment, sampling,...
R&D Report 1975-26 : Hadamard transformation: Walsh spectral analysis of television signals. C.K.P. Clarke The characteristics of Walsh-Hadamard transformation systems are examined with a view to reducing the data rate of digital television signals. Transformed signals have been measured using several different transformation arrangements by means of a Walsh spectrum analyser, in which television signals are correlated with Walsh functions. It is found that a slightly higher data rate is...
Topics: sequency, transformation, coefficients, signal, signals, hadamard, transform, walsh, spectra,...
A display enhancement implemented on the new VDM-1 video display board installed in a LORAN-C navigation receiver is addressed. Increased character size for easier viewing of the 3.75 inch diagonal CRT display is provided.
Topics: NASA Technical Reports Server (NTRS), ALPHANUMERIC CHARACTERS, CIRCUIT BOARDS, COMPUTER GRAPHICS,...
Constraints on the CRT display size for the shuttle orbiter cabin are studied. The viewing requirements placed on these monitors were assumed to involve display of imaged scenes providing visual feedback during payload operations and display of alphanumeric characters. Data on target recognition/resolution, target recognition, and range rate detection by human observers were utilized to determine viewing requirements for imaged scenes. Field-of-view and acuity requirements for a variety of...
Topics: NASA Technical Reports Server (NTRS), DISPLAY DEVICES, MONITORS, SIZE DETERMINATION, SPACE SHUTTLE...
An inexpensive data/command entry and display system is documented. This system is designed to operate in place of a separate ASC2 terminal. The software to interface this unit to the 6502 based navigation receiver is also described.
Topics: NASA Technical Reports Server (NTRS), DATA PROCESSING EQUIPMENT, DISPLAY DEVICES, LORAN C,...
