What is a local bus?

The bus is a computer component, usually a slot connected to the motherboard that allows the flow of information between two or more devices. The local bus, also referred to as an internal bus, is defined as a specific bus that allows connection to the motherboard and communication with the motherboard from the device inside the computer. Local devices would include items such as a graphics card, sound card and modem. There are several architectures for a local bus, which has gradually evolved as progress in computer technology. Most computers contain a number of buses to check input and output (I/O).

Older equipment and possibly some current computers contain a bus with industrial standard architecture (ISA), which may or may not have real slots on the motherboard. ISA was the first standard architecture and is still sometimes used for compatibility with older or slower devices such as mice and modems. Buses with extended industrial standarThe Days of Architecture (EISA) were around Briefly, but was quickly grounded according to the following standards discussed. In 1992 there was a local bus of the Association of Electronic Standards (VESA), also known as VLB. This standard increased communication speed and dramatically improved video performance.

developed and introduced in 1992, local bus connections (PCI) quickly became a popular choice for internal buses. The PCI bus provided improved information transmission using Burst mode and improved performance through bus management. The PCI standard also facilitated the use of high bandwidth. The speed of this type of local bus can be set either synchronously or asynchronously, giving the user the possibility of overclocking the system to increase the processues.

BUS PCI are unable to handle the extreme graphic requirements of the modern computing era. The purpose of slots of an accelerated graphic port (AGP) was to replace PCI slots. Some consider the AGP slot to be a port rather than a bus because it connects only two devices, a graphics card and a motherboard. However, AGP did not hold the upper slot for a long time, because the peripheral component of the PCI-E) entered the circle to become a new standard.

Local PCI-e uses serial connections that are less receptive interference. In addition, this standard allows real two -way communication. These factors make PCI-e faster than its predecessors. The scalability and speed of this standard make it the main architecture of the local bus for I/O control since 2011.