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USB Host
D.E.V.I.C.E. is an encyclopedia of terms used by manufacturers of test and measurement equipment. T&M Atlantic created this service to better explain the functionality of instruments it offers, and to highlight the latest developments in the world of measurement equipment. We are using such tools as animation to bring words and pictures to life and to create not just an understanding but also an appreciation for technology that goes into the design of every instrument.
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If you are searching for a particular term or definition, please contact us and our engineers will be glad to explain it to you.
USB consists of the following elements:
- host controller (host) – main controller that is included into the system unit and controls the transmission of packets on the bus. There can be only one host on USB. PC system unit contains one or several hosts and each of them controls a separate USB.
Host functions:
- device connection and disconnection control;
- controlling data-flows organization between the USB-device and the host;
- data-flows organization between the USB-device and the host;
- device condition monitoring and statistics activity control;
- power supply of the connected devices.
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