IEEE 488

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What Does IEEE 488 Mean?

IEEE 488 is a digital communications bus specification invented by Hewlett Packard and used to connect short range communication devices. This term is also known as the general purpose interface bus (GPIB) or the Hewlett Packard interface bus (HP-IB).

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Techopedia Explains IEEE 488

In the 1960s, Hewlett Packard developed IEEE 488 to easily interconnect controllers and instruments. As a short range communication bus, IEEE 488 was easy to connect and configure. The IEEE 488 has a 24-pin connector and is used for double headed design. Both ends of the cable are used, male on one side and female on other side. The IEEE 488 has 16 signal lines. Eight lines are dedicated for bi-directional communication, five lines are used for bus management. The remaining three lines are dedicated for handshakes. This allows 15 devices to be shared over a single physical bus.

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Margaret Rouse
Technology expert
Margaret Rouse
Technology expert

Margaret is an award-winning writer and educator known for her ability to explain complex technical topics to a non-technical business audience. Over the past twenty years, her IT definitions have been published by Que in an encyclopedia of technology terms and cited in articles in the New York Times, Time Magazine, USA Today, ZDNet, PC Magazine, and Discovery Magazine. She joined Techopedia in 2011. Margaret’s idea of ​​a fun day is to help IT and business professionals to learn to speak each other’s highly specialized languages.