Tuesday, 12 November 2013

Parallel transmission communicates bits simultaneously over multiple lines typically the total consists of one or more bytes at a time. Parallel devices have a wider data bus then serial devices and can therefore transfer data in words of one or more bytes at a time. As a result, there is a speedup in parallel transmission bit rate over serial transmission bit rate. The timing for parallel
transmission is provided by a constant clocking signal sent over a separate wire within the parallel cable; thus parallel transmission is considered synchronous. Computers are typically connected to printers and external disk drives via parallel interfaces, ports, and buses

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