Definition

bus master

Part of the Personal computing glossary:

A bus master is the program, either in a microprocessor or more usually in a separate I/O controller, that directs traffic on the computer bus or input/output paths. The bus master is the "master" and the I/O devices on the bus are the "slaves." The bus master actually controls the bus paths on which the address and control signals flow. Once these are set up, the flow of data bits goes directly between the I/O device and the microprocessor.

Next Steps

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This was last updated in April 2005

Posted by: Margaret Rouse

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Glossaries

Personal computing
- Terms related to personal computers, including definitions about computers sold as consumer products and words and phrases about laptops, tablets and smartphones.
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 ...

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