1. local bus A bus connecting a processor to memory, usually on the same circuit board as opposed to a backplane and therefore faster. Various proprietary local busses for personal computers are still in use. The most common are Vesa local bus VLB or VL, and Peripheral Component Interconnect PCI. Some computers, e. g. notebook computers, use a local bus with no expansion slots. Previous non-local bus standards include ISA, EISA and MCA.
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