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daisy chaining

Daisy chaining is the process of connecting several peripheral devices in series on a data line in the form of a chain so that the output of one device is connected to the input of the next device.

Daisy chains help to save costs when connecting peripheral devices by keeping cabling requirements low. However, the disadvantage of such a daisy chain is that if one device fails, all the devices behind it usually also become inoperable.

In an abstracted view, the term daisy chaining is also used for control techniques for selecting a transmitting station from a set of stations that can simultaneously have access to a mutually connected usable transmission system - such as an internal computer bus or a CAN bus.

Topology of the daisy chain

Topology of the daisy chain

A station that receives the signal thereby becomes e.g. the bus master and is allowed to initiate a message transfer. If this station has nothing to send, it immediately passes on the right. Daisy chaining is based on the physical arrangement of stations, unlike token-passing schemes, which are structurally equivalent but can be made independent of the physical arrangement. The advantage of daisy chaining is ease of implementation, disadvantages are introduction of rigid priority scheme, delays due to selection signals, vulnerability, unfairness, possibility of monopolization by one user.

Informations:
Englisch: daisy chaining
Updated at: 23.09.2021
#Words: 215
Links: process, data, line, cabling, indium (In)
Translations: DE
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