A local bus is like a central city bus. Expansion slots gain a direct connection to the CPU as it directly connects to the CPU's own bus. Yes VESA is a local bus , and most probably PCI is also a local bus.
It can have several buses, including the system bus, the PCI Express bus, the PCI bus, the AGP bus, and the outdated ISA bus.
Different types of buses: P ISA (Industry Standard Architecture) P EISA (Extended ISA) P VESA (Video Electronics Standards Association, VL Bus) P PCI (Peripheral Component Interconnect) P USB (Universal Serial Bus) P AGP (Advanced Graphics Port)
PCI , AGP and PCI Express
A local bus is one which is integrated into the computer. Typically, this includes the Frontside Bus (or Hypertransport in AMD), the Memory Bus, the PCI bus, the PCI Express Bus (if present), the AGP Bus (if present), and onboard peripheral busses such as IDE, SATA, USB, IR, Firewire, and many others. Expansion buses are those which are not built in. For example, if you do not utilize onboard video, you would use a PCI, AGP, or PCI-E expansion bus to add video capabilities.
Not sayin :P haha
No, they are physically different buses.
ISA bus was a standard used for years. It was first 8-bit, being the standard expansion slot for most 8086/8088 motherboards, but later extended to 16-bit, which was the standard for 286, 386, and 486 motherboards. Most standard PC's had ISA slots through the late 1990's. They began to be phased out in the early 2000's, and are now obsolete. VESA Local bus was an extension of the standard 16-bit ISA bus, and gave a 32-bit expansion slot. These were seen in late 486 and early Pentium motherboards, which would often have two or three VESA Local Bus slots in addition to 16-bit ISA slots. They were short lived, quickly replaced by PCI slots. PCI was introduced in the mid 1990's, and are still common today. Some late 486 motherboards had two or three PCI slots in addition to 16-bit ISA slots, and they became standard with Pentium systems (most Pentium motherboards, Pentium II motherboards, and some Pentium III motherboards still had some ISA slots in addition to the PCI slots). MCA was bus developed by IBM and used in their PS/2 systems. It is to buses what Beta is to the VCR: A good technology, but made obsolete because it's developers made it too expensive for other manufacturers to license. MCA offered a 32-bit bus before VESA Local Bus or PCI were available.
The 4 types are address, data, expansion and video bus. There are three types of buses used on a motherboard: 1. data bus 2. address bus 3. control bus --- Data bus, System bus, Front side bus (FSB), and Host Bus --- The system bus, the PCI Express bus, the PCI bus, the AGP bus, and the outdated ISA bus. --- Front side bus (CPU to northbridge) Graphics Bus (Northbridge To Video Card) Memory Bus (Northbridge to Memory) Internal Bus (Northbridge to Sotuhbridge) PCI Bus (Southbridge to PCI expansion slots).
ISA is one of the first expansion buses for computers prior to the introduction of PCI, which was subsequently superseded by PCI Extended and PCI Express.
The PCI slot is faster. Offer mayor speed because the PCI use more faster BUSes and new architectures. The PCI EXPRESS is the newest version of the PCI architecture.
AGP was designed for video controllers only. PCI-E can work with any compatible device.
AGP PCI Express