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In serial communication data is transmitted as a sequence in time. Main advantage: much less wires needed. Main disadvantage: Higher bandwidth for the same throughput.

Examples of serial protocols are:

  • I²C
  • SPI
  • Universal Serial Bus (USB)
  • FireWire
  • Ethernet
  • SDI-12 industrial sensor protocol
  • Serial Attached SCSI
  • Serial ATA
  • PCI Express