2,702 research outputs found
A NASA family of minicomputer systems, Appendix A
This investigation was undertaken to establish sufficient specifications, or standards, for minicomputer hardware and software to provide NASA with realizable economics in quantity purchases, interchangeability of minicomputers, software, storage and peripherals, and a uniformly high quality. The standards will define minicomputer system component types, each specialized to its intended NASA application, in as many levels of capacity as required
The Microcomputer Catalyst
Microcomputer it is a word many of us first heard only a couple of years
ago. Yet the technology this word represents holds promise of tremendous
change. The changes catalyzed by microcomputing and its associated
technologies may alter the fundamental nature of information handling in
all its forms. This, of course, means that libraries and information centers
will be profoundly affected by this new technology. This paper attempts to
indicate some possible directions of the changes prompted by microcomputing
technology. However, these ideas are offered only with the disclaimer
that technology in this area is developing so rapidly that no one
involved in computing can fully understand its implications. Hardware
designers and software engineers involved in microcomputing are themselves
still attempting to discern the values and possible uses of microcomputers.
The only "given" most would agree upon is the recognition that
microcomputers will alter the basic manner in which computers are used
and viewed in our society.published or submitted for publicatio
Escort: A data acquisition and display system to support research testing
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 the proper combination of devices to meet the specific test requirements, while still leaving the option to add special interfaces when needed. Centralization of the minicomputer improves utilization through sharing. The creation of a pool of minis to provide data acquisition and display services to a variable number of running tests also offers other important advantages
Minicomputers: What is the choice?
Illustration not included in Web versio
The revolution in data gathering systems
Data acquisition systems used in NASA's wind tunnels from the 1950's through the present time are summarized as a baseline for assessing the impact of minicomputers and microcomputers on data acquisition and data processing. Emphasis is placed on the cyclic evolution in computer technology which transformed the central computer system, and finally the distributed computer system. Other developments discussed include: medium scale integration, large scale integration, combining the functions of data acquisition and control, and micro and minicomputers
User microprogrammable processors for high data rate telemetry preprocessing
The use of microprogrammable processors for the preprocessing of high data rate satellite telemetry is investigated. The following topics are discussed along with supporting studies: (1) evaluation of commercial microprogrammable minicomputers for telemetry preprocessing tasks; (2) microinstruction sets for telemetry preprocessing; and (3) the use of multiple minicomputers to achieve high data processing. The simulation of small microprogrammed processors is discussed along with examples of microprogrammed processors
Computers: Equipment and Services
published or submitted for publicatio
The space science data service: A study of its efficiencies and costs
Factors affecting the overall advantages and disadvantages of a centralized facility for both the data base and processing capability for NASA's Office of Space Science programs are examined in an effort to determine the best approach to data management in the light of the increasing number of data bits collected annually. Selected issues considered relate to software and storage savings, security precautions, and the phase-in plan. Information on the current mode of processing and on the potential impact of changes resulting from a conversion to a space science data base service was obtained from five user groups and is presented as an aid in determining the dollar benefits and advantages of a centralized system
The role in enabling government to organize and operate itself in a more efficient and cost effective manner by using the information technology
This paper illustrates the value of interoperability in the delivery of Government e-services: Governmentto- Government, business-to-Government and citizen-to-Government. It describes the many issues involved in achieving successful interoperability programs—together with the tools, technologies and standards that help make this possible.The information technology, the delivery of Government e-services, successful interoperability programs
Monthly progress report
This report is the mid-year report intended for the design concepts for the communication network for the Advanced Solid Rocket Motor (ASRM) facility being built at Yellow Creek near Iuka, MS. The overall network is to include heterogeneous computers, to use various protocols, and to have different bandwidths. Performance consideration must be given to the potential network applications in the network environment. The performance evaluation of X window applications was given the major emphasis in this report. A simulation study using Bones will be included later. This mid-year report has three parts: Part 1 is an investigation of X window traffic using TCP/IP over Ethernet networks; part 2 is a survey study of performance concepts of X window applications with Macintosh computers; and the last part is a tutorial on DECnet protocols. The results of this report should be useful in the design and operation of the ASRM communication network
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