A medium-scale hybrid interface

A flexible, low-cost hybrid interface linking a DEC PDP-9 digital computer with an EAI 231 R-V analog computer is described. The interface includes provision for complete mode control of the 231 R-V by the PDP-9, as well as signal selection and potentiometer setting facilities. Data transfer is acco...

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Bibliographic Details
Published in:Simulation (San Diego, Calif.) Calif.), 1968-05, Vol.10 (5), p.225-233
Main Authors: Marston, G.P., MacDonald, J.S.
Format: Article
Language:English
Subjects:
Analog computers
Channels
Data transfer (computers)
Digital
Digital computers
High speed
Registers
Online Access:Get full text
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Summary:A flexible, low-cost hybrid interface linking a DEC PDP-9 digital computer with an EAI 231 R-V analog computer is described. The interface includes provision for complete mode control of the 231 R-V by the PDP-9, as well as signal selection and potentiometer setting facilities. Data transfer is accomplished by using double-buffered D/A registers with provision for controlling the transfer of data from either the analog or digital side of the interface. In addi tion, provision is made for the updating of several D/A channels simultaneously. A sixteen channel analog multi plexer with a settling-time of less than two microseconds has been designed and is employed with a twelve-bit twenty-microsecond A/D converter for high-speed analog- to-digital data transfer.
ISSN:0037-5497
1741-3133
DOI:10.1177/003754976801000504