Browse Prior Art Database

Selection System

IP.com Disclosure Number: IPCOM000090831D
Original Publication Date: 1969-Jul-01
Included in the Prior Art Database: 2005-Mar-05
Document File: 2 page(s) / 35K

Publishing Venue

IBM

Related People

Houdek, ME: AUTHOR

Abstract

This selection system permits the connection of many controlled devices such as input/output equipment to a control unit without address jumpering. Thus, each controlled device can be identical. The drawing shows only the select lines. Other control and data lines that are common to each controlled device are not shown.

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Selection System

This selection system permits the connection of many controlled devices such as input/output equipment to a control unit without address jumpering. Thus, each controlled device can be identical. The drawing shows only the select lines. Other control and data lines that are common to each controlled device are not shown.

To accomplish this mode of selection, each controlled unit 1...4 is connected in series from the control unit by identical cables 12 which can vary in length. Select line 13 is attached to the identical internal cable conductor leading from the input plug to the outlet socket. Within each cable 12, a conductor is displaced to the select position in a predetermined sequence as shown by one example. Thus when the controlled devices are connected serially by identical cables, each is connected to a separate conductor until the number of controlled devices so connected is equal to the number of select lines provided by the cables. Each controlled device is identical and each cable 12 is identical with the same change of conductor sequence from plug 15 to socket 16.

With this system, any controlled device can be removed from the system by connecting together the two cables connected to that device. Further, since the controlled devices arc identical, any controlled device can be substituted at any location without the requirement of address changing.

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