Local bus

Local bus

In computer science, a local bus is a computer bus that connects directly, or almost directly, from the CPU to one or more slots on the expansion bus. The significance of direct connection to the CPU is avoiding the bottleneck created by the expansion bus, thus providing fast throughput.

VESA Local Bus is an example of a local bus design.

Although VL-Bus was later succeeded by AGP, it is not correct to categorize AGP as a local bus. Whereas VL-Bus operated on the CPU's memory bus at the CPU's clock speed, an AGP peripheral runs at specified clock speeds that run independently of the CPU clock (usually using a divider of the CPU clock).


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  • Local Bus — Local Bus,   Erweiterungsbus (Bus) mit einer direkten (= lokalen) Verbindung zum Prozessor des Computers. Dies ermöglicht hohe Datenübertragungsraten und eine Anpassung an die Taktfrequenz des Prozessors. Der erste Local Bus des PCs war der VLB… …   Universal-Lexikon

  • local bus —    A PC bus specification that allows peripheral devices to exchange data at a rate faster than the 8MBps allowed by the ISA (Industry Standard Architecture) definition and the 32MBps allowed by the EISA (Extended Industry Standard Architecture)… …   Dictionary of networking

  • local bus — direct data bus between the processor and expansion boards which allows high speed data transfer between them …   English contemporary dictionary

  • local bus — …   Useful english dictionary

  • MTA Maryland Local Bus — Infobox Bus transit name = MTA Maryland Local Bus logo size = image size = 250px image caption = MTA Maryland #04119 operates along North Eutaw Street north of Mulberry Street on the 27. company slogan = parent = Maryland Transit Administration… …   Wikipedia

  • VESA Local Bus — The VESA Local Bus (usually abbreviated to VL Bus or VLB) was mostly used in personal computers. VESA Local Bus worked alongside the ISA bus; it acted as a high speed conduit for memory mapped I/O and DMA, while the ISA bus handled interrupts and …   Wikipedia

  • Vesa Local Bus — Carte graphique SVGA au standard Vesa Local Bus …   Wikipédia en Français

  • VESA Local Bus — Carte mère avec 3 connecteurs VESA Local Bus Carte graphique SVGA au standard VESA Local Bus …   Wikipédia en Français

  • VESA-Local-Bus — i486 ISA /VL Bus Hauptplatine VLB Erweiterungskarten: I/O Controller 1×IDE/FDD/parallel/ 2×RS232/Game (oben), VGA Grafikkarte (unten) Der VESA …   Deutsch Wikipedia

  • VESA Local Bus — i486 ISA /VL Bus Hauptplatine …   Deutsch Wikipedia

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