Motorola Codex Digital Sharing Device

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The Motorola Codex Digital Sharing Device (DSD) is a multipurpose data communications device
designed to enable up to six modems or ports in any combination to share a single connection with one master modem or port. The DSD therefore allows equipment from up to six subchannels to use the same main channel modem or port.

The main channel modem or port broadcasts signals to all subchannels simultaneously, while subchannel modems or ports with data to transmit to the main channel must first wait to be selected one at a time by DSD control circuitry. Unselected subchannel data transmissions are locked out.

Codex Corporation were founded in 1962 with headquarters in Massachusetts, USA. Motorola acquired the Codex Corporation in February 1977.

Date : 1981

This exhibit has a reference ID of CH43470. Please quote this reference ID in any communication with the Centre for Computing History.

Scan of Document: Motorola Codex Digital Sharing Device

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