Flat ribbon cable assembly is the application of producing flat ribbon cable for a specific device. Ribbon cables typically have many wires running next to each other in a flat cable and are usually used for internal peripherals in computer hard drives, and CD drives. 
Building ribbon cables is a similar process to simple cable assembly, where the wires are cut to the required length and placed on a workbench where they are manually tied together to form the cable. When inserting ribbon cable into applications however, many designers tend to mark one edge of the cable with a red stripe. This is to help them distinguish which end is the polarized end, and which is the un-polarized end, as if inserted into the application using the wrong end it could potentially damage the hardware. For more complex designs many designers like to use custom ribbon cable assemblies to meet their exact requirements.
Also see: Multi-core Data Cable, Medical Cables, Custom Products
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