What is the purpose of expansion slots? What's an example

Computer System Expansion Slots PDF expansion slot definition computer expansion slots from ISA to PCIe The video I mention at the end about PC motherboards is expansion slot function Computers often outlast the usefulness of their original video card, and upgrading this one component through an expansion slot can revitalize the computer

expansion slot EXPANSION SLOT An expansion slot is a socket on the motherboard that is used to insert an expansion card , which provides