Peripheral Component Interconnect local bus


Peripheral Component Interconnect local bus
   Abbreviated PCI local bus. A specification introduced by Intel in 1992 for a local bus that allows up to 10 PCIcompliant expansion cards to be plugged into the computer. One of these expansion cards must be the PCI controller card, but the others can include a video card, network interface card, SCSI interface, or any other basic function.
   The PCI controller exchanges information with the computer's processor, either 32 or 64 bits at a time, and allows intelligent PCI adapters to perform certain tasks concurrently with the main processor by using bus-mastering techniques.
   PCI is compatible with ISA (Industry Standard Architecture), EISA (Extended Industry Standard Architecture), and MCA (Microchannel Architecture) expansion buses for backward compatibility with older technologies. PCI can operate at a bus speed of 32MHz and can manage a maximum throughput of 132MBps with a 32-bit data path or a rate of 264MBps with a 64-bit data path.

Dictionary of networking . 2014.

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