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General-purpose interface bus for multiuser, multitasking computer systemThe architecture of a multiuser, multitasking, virtual-memory computer system intended for the use by a medium-size research group is described. There are three central processing units (CPU) in the configuration, each with 16 MB memory, and two 474 MB hard disks attached. CPU 1 is designed for data analysis and contains an array processor for fast-Fourier transformations. In addition, CPU 1 shares display images viewed with the image processor. CPU 2 is designed for image analysis and display. CPU 3 is designed for data acquisition and contains 8 GPIB channels and an analog-to-digital conversion input/output interface with 16 channels. Up to 9 users can access the third CPU simultaneously for data acquisition. Focus is placed on the optimization of hardware interfaces and software, facilitating instrument control, data acquisition, and processing.
Document ID
19910051305
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Generazio, Edward R.
(NASA Lewis Research Center Cleveland, OH, United States)
Roth, Don J.
(NASA Lewis Research Center Cleveland, OH, United States)
Stang, David B.
(NASA Lewis Research Center; Sverdrup Technology, Inc. Cleveland, OH, United States)
Date Acquired
August 15, 2013
Publication Date
November 1, 1990
Publication Information
Publication: Materials Evaluation
Volume: 48
ISSN: 0025-5327
Subject Category
Computer Operations And Hardware
Accession Number
91A35928
Distribution Limits
Public
Copyright
Other

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