THE DATA CONCENTRATOR

Abstract

This report describes a programmable transmission control unit which is attached to an IBM System/360 Model 67 machine operated in a timeshared environment. Called the Data Concentrator, this device provides service for AT+T teletype equipment, IBM typewriter terminal equipment, and remotely located computer equipment interconnected with serial-synchronous transmission data sets. The data Concentrator is constructed of several different kinds of line adapters which connect on one hand to all types of AT+T data sets available for use on the switched-network, and on the other to a modified Digital Equipment Corporation PDP-8 computer. Connection is made between the System/360 multiplex channel and the PDP-8 by means of a special interface which provides a direct connection to the control lines emanating from the multiplex channel and presents a behavior compatible with other IBM transmission control units. The programmable nature of the Data Concentrator provides an unusually rich variety in transmission protocol and operational modes for its attached terminal equipment yet with minimal modifications to extant System/360 control programs.

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1968
Accession Number
AD0671684

Entities

People

  • David K. Mills

Organizations

  • University of Michigan

Tags

Communities of Interest

  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Buffer Storage
  • Computer Programming
  • Computer Programs
  • Computers
  • Data Processing
  • Data Sets
  • Data Transmission
  • Data Transmission Systems
  • Digital Communications
  • Identification
  • Language
  • Message Processing
  • Operating Systems
  • Teletypewriters
  • Terminals
  • Translations
  • Typewriters

Fields of Study

  • Physics

Readers

  • Computer Science/Computer Engineering/Data Science/Digital Signal Processing.