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Expansion slots bus meaning


Computer bus that either has additional slot to plug in more devices, or is a bus that plug into a bus to provide additional slots.
PC/104(-Plus) or Mini PCI are often added for expansion on small form factor boards such as Mini-ITX.Eisa, the online casino jackpot valley 32-bit extended version of ISA championed by Compaq, was used on some PC motherboards until 1997, when Microsoft declared it a "legacy" subsystem in the PC 97 industry white-paper.Industrial backplane systems had connectors mounted on the top edge free games slots machines cleopatra of the card, opposite to the backplane pins.Expansion slots are sometimes referred to as bus slots or expansion ports.An expansion card can be plugged into a slot with a higher number but not with a lower number.The PCI bus was introduced in 1991 as a replacement for ISA.However, the expansion modules attached to these interfaces, though functionally the same as expansion cards, are not technically expansion cards, due to their physical form.
When you're installing an expansion card, before removing the computer case, be sure to first power down the computer and unplug the power cord from the back of the power supply.
For example, the original IBM PC did not have on-board graphics or hard drive capability.Minicomputers, starting with the.Applications edit The primary purpose of an expansion card is to provide or expand on features not offered by the motherboard.Market Looks to EGA as De Facto Standard, InfoWorld, Aug 19, 1985 Product Comparison: 16-Bit EMS Memory, InfoWorld, Sep 7, 1987 External links edit.Intel launched their PCI bus chipsets along with the P5 -based Pentium CPUs in 1993.This may have been electrically comparable to the XT bus; it most certainly had some similarities since both essentially exposed the 8088 CPU's address and data buses, with some buffering and latching, the addition of interrupts and DMA provided by Intel add-on chips, and.They establish the electrical contact between the electronics on the card and on the motherboard.Again, PCjr sidecars are not technically expansion cards, but expansion modules, with the only difference being that the sidecar is an expansion card enclosed in a plastic box (with holes exposing the connectors).At that time, the technology was called the PC bus.2 3 4 The PC/104 bus is an embedded bus that copies the ISA bus.




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