Ribbon cable

Left: 20-way grey ribbon cable with wire for pin 1 marked red, insulation partly stripped. Right: 16-way rainbow ribbon with IDC connector.
IDC D-sub connectors DE-9 (male) and DA-15 (female)
Twisted ribbon cable used for Parallel SCSI connections

A ribbon cable is a cable with many conducting wires running parallel to each other on the same flat plane. As a result, the cable is wide and flat. Its name comes from its resemblance to a piece of ribbon.[1]

Ribbon cables are usually seen for internal peripherals in computers, such as hard drives, CD drives and floppy drives. On some older computer systems (such as the BBC Micro and Apple II) they were used for external connections as well. The ribbon-like shape interferes with computer cooling by disrupting airflow within the case and also makes the cables awkward to handle, especially when there are a lot of them; as a result, round cables have almost entirely replaced ribbon cables for external connections and are increasingly being used internally as well.

  1. ^ Hunter Cable Assembly Ltd. "Ribbon-and-Flat-Cable-Assemblies-whitepaper.pdf" (PDF). white paper. Hunter Cable Assembly. Archived from the original (PDF) on 2016-03-03.

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