Peripherals and Buses In computer I/O, a “daisy chain” arrangement is primarily used for what purpose?

Introduction / Context:Daisy chaining is a classic hardware technique where multiple peripherals share a single controller or bus using a serial or cascading connection. It appears in interfaces such as SCSI (older generations), IEEE-488 (GPIB), and some modern display/Thunderbolt topologies.

Given Data / Assumptions:

• Daisy chain implies a sequence: controller → device 1 → device 2 → …
• Only one controller initiates bus transactions; devices respond per addressing/priority rules.
• We are not describing a many-controller mesh network.

Concept / Approach:Identify the topology: a chain off a controller, often with address or ID assignment and termination rules. Evaluate which option correctly describes that topology.

Step-by-Step Solution:Recognize “daisy chain” as a single-controller, multiple-device arrangement.Confirm that each device links to the next, sharing the bus and signals.Conclude that the accurate description is connecting many devices to one controller.

Verification / Alternative check:Historically, SCSI chains required terminators at physical ends and unique device IDs, precisely matching “many devices on one controller”. GPIB allows multiple instruments on one controller in a chain or star-like formation.

Why Other Options Are Wrong:Connecting many controllers to one device (Option A) reverses the relationship.A full mesh of multiple controllers and devices (Option C) is not a daisy chain; it needs switches or hubs.“All of the above” is invalid because only one description fits.

Common Pitfalls:

• Confusing daisy chaining with hub/switch-based star networks.
• Forgetting required termination or unique addressing in chained buses.

Final Answer:Connecting a number of devices to a single controller.