What is ABCD data switch? - Definition from WhatIs.com
Part of the Routing and switching glossary:

An ABCD data switch is a small box that lets you hook up to four devices from one PC serial or parallel port on your computer. For example, if you have both a black-and-white laser printer for regular printing and a color inkjet printer for when you want color, you may want to attach them both to your computer. Perhaps you also have a tape backup drive that needs to be attached. You can connect all of them to the ABCD box which is in turn connected to your PC's parallel port. By turning a rotary switch on the box to the A, B, C, or D (if you have a fourth device attached) position, you can select the device you want to be active. (You will need to tell your operating system the kind of device that's attached whenever you switch.)

The data switch can also be used to have up to four computers share the same printer or other device.

This handy little switch costs about $20 (U.S.) and can be purchased in local PC stores.

This was last updated in November 2010
Posted by: Margaret Rouse

Related Terms

Definitions

  • OSPF (Open Shortest Path First)

    - The OSPF router protocol is used to find the best path for packets as they pass through a set of connected networks. OSPF is one of several Interior Gateway Protocols that replaces the Routing Info... (SearchEnterpriseWAN.com)

  • software-defined networking (SDN)

    - Software-defined networking (SDN) is an approach to networking in which control is decoupled from the physical infrastructure, allowing network administrators to support a network fabric across mul... (searchSDN.com)

  • RFC 1918

    - RFC 1918 specifies ranges of IP addresses for use in private networks. These private IP addresses cannot be routed on the Internet. (WhatIs.com)

Glossaries

  • Routing and switching

    - Terms related to routers and switches, including definitions about hubs and words and phrases about packet-switched networks.

  • Internet applications

    - This WhatIs.com glossary contains terms related to Internet applications, including definitions about Software as a Service (SaaS) delivery models and words and phrases about web sites, e-commerce ...

Ask a Question About ABCD data switchPowered by ITKnowledgeExchange.com

Get answers from your peers on your most technical challenges

Tech TalkComment

Share
Comments

    Results

    Contribute to the conversation

    All fields are required. Comments will appear at the bottom of the article.