Peripheral cards such as sound and video cards connect to the motherboard of a computer via the expansion bus, and the term "Local Bus" means that the processor has direct access to that bus, and therefore any expansion card connected to it. Unlike the ISA bus the VL-Bus and PCI Bus standards both support this mode of operation and therefore are considerably faster than ISA when using high speed devices such as video cards.

A bus that operates at a speed synchronized with the CPU frequency. The system bus is a local bus.

A PC architecture designed to speed up system performance by allowing some expansion adapters to communicate directly with the microprocessor, bypassing the normal system bus entirely. Computers that do not have a local bus are generally restricted to communication speeds of 8 MHz for Micro Channel-based computers. In the emerging technology, there are two primary types of local bus architecture: the VESA local bus (also called the VL-bus) and Intel’s Peripheral Component Interconnect (PCI) local bus. Local bus capability must be built into a system’s motherboard – it is not possible to convert an ISA-,EISA-, or Micro Channel-based computer to a local bus system.

A high speed data path (bus) from the PC processor to it's peripherals. The ISA bus (Industry Standard Architecture) can transfer information at a maximum of 16MB/second, the EISA bus (Expanded Industry Standard Architecture) at 32 MB/second, and the Micro Channel bus (an exclusive IBM architecture) at 40MB/second. A 486-25 could transfer information at 74MB/second if allowed, but its transfer speed is limited by its bus architecture. The Local Bus runs at speeds approaching the memory or processor itself and therefore does not limit the transfer of information in today's PC. (7/96)

A bus (e.g. the system bus) which runs synchronously with the clock frequency in a connected device.

A PC bus specification that allows peripherals to exchange data at a rate faster than the 8 megabytes per second allowed by the ISA, and the 32 megabytes per second allowed by the EISA definitions. Local bus can acheive a maximum data rate of133 megabytes per second with a 33MHz bus speed, 148 megabytes per second with a 40MHz bus, or 267 megabytes per second with a 50 MHz bus. VESAs video cards have been the main peripheral to benefit from local bus use. Also defined as, a fast expansion bus found on 486 and Pentium computers that operates at a higher speed than the old ISA bus and allows 32-bit data transfers. Two types are commonly found:VESA and PCI. Many 486 comps include several VESA local bus slots, but newer Pentium comps use PCI slots. For best network performance,all servers should have VESA or PCI disk I/O and network interface cards(NICs).

an interface bus architecture that provides a faster, more efficient path to the CPU. Devices using a local bus interface are intended to achieve higher performance than conventional ISA bus devices.

A data bus that provides a fast throughput for devices to the microprocessor.

A bus or electronic pathway that allows access to the CPU at a speed synchronized with the CPU.

On a system with local-bus expansion capability, certain peripheral devices (such as the video adapter circuitry) can be designed to run much faster than they would with a traditional expansion bus. See also bus.

On a computer with local-bus expansion capability, certain devices such as the AGP video card can be designed to run much faster than they would with a traditional expansion bus. Some local-bus designs allow devices to run at the same speed and with the same-width data path as the computer's microprocessor.

Bus that works ata s speed synched with the CPU frequency.

A generic term used to describe a bus directly attached to a processor and that operates at the processor's speed and data transfer width.

A PC bus specification that allows peripherals to exchange data at a rate faster than the 8 megabytes per second allowed by the ISA (Industry Standard Architecture), and the 32 megabytes per second al ... more

High-speed expansion bus that connects higher speed devices such as hard disks. 4.31 Local/Regional ASP, 3.36

A bus that links expansion boards directly to the computer system's common bus.

Usually refers to a system bus that is directly connected to the microprocessor on a system board. Used colloquially to refer to system board buses located closer to the microprocessor than are ordinary expansion buses (that is, with less buffering). This proximity to the microprocessor means that system board buses are capable of greater throughput.

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.