Final answer:
PCI is an interface standard used to connect peripheral devices to a computer's motherboard. It has been superseded by PCIe technology but is still found on older computers. PCI allows for high-speed data transfer and enables devices to communicate with each other.
Step-by-step explanation:
Definition:
PCI, short for Peripheral Component Interconnect, is an interface standard used to connect various peripheral devices to a computer's motherboard. It allows for high-speed data transfer between components such as graphics cards, sound cards, network adapters, and storage devices. The term 'Legacy' refers to the older version of the PCI standard, which has been superseded by newer technologies like PCIe (PCI Express).
PCI was first introduced in 1992 as an expansion bus architecture. It allowed devices to be interconnected and communicate with each other. PCI slots are still found on some older computers, but they are gradually being replaced by PCI Express slots, which offer faster data transfer rates and improved performance. The term 'Legacy' is used to distinguish the older PCI version from the newer PCIe technology.
Example:
Imagine you have an older computer with a PCI slot. You can add a PCI graphics card to improve your computer's graphics capabilities. By connecting the card to the PCI slot on the motherboard, you can enjoy better image quality and smoother gameplay.