daisy chain

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daisy chain

[′dāz·ē ‚chān]
(computer science)
A means of connecting devices (readers, printers, and so on) to a central processor by party-line input/output buses which join these devices by male and female connectors, the last female connector being shorted by a suitable line termination.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

daisy chain

(networking)
A bus wiring scheme in which, for example, device A is wired to device B, device B is wired to device C, etc. The last device is normally wired to a resistor or terminator. All devices may receive identical signals or, in contrast to a simple bus, each device in the chain may modify one or more signals before passing them on.

Characteristic of RS-485, of Apple's LocalTalk, and of various industrial control networks; also often used to describe Thinwire Ethernet (10base2).
This article is provided by FOLDOC - Free Online Dictionary of Computing (foldoc.org)

daisy chain

Connected in series, one after the other. Transmitted signals go to the first device, then to the second and so on. For example, the Small Computer System Interface supports daisy chains (see SCSI).


A SCSI Daisy Chain
Both internal and external SCSI devices are daisy chained together. Each device has an "in" and "out" port.







Dual Ported Devices
Daisey-chained devices such as this early SCSI slide scanner have two ports.
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