Content deleted Content added
m pointed two "Apple II" wikilinks to "Apple II series" -- (disambiguation) |
m formatting fix |
||
Line 13:
Expansion cards allow the capabilities and interfaces of a computer system to be extended or supplemented in a way appropriate to the tasks it will perform. For example, a high-speed multi-channel data acquisition system would be of no use in a personal computer used for bookkeeping, but might be a key part of a system used for industrial process control. Expansion cards can often be installed or removed in the field, allowing a degree of user customization for particular purposes. Some expansion cards take the form of "daughterboards" that plug into connectors on a supporting system board.
In [[personal computing]], notable expansion buses and expansion card standards include the [[S-100 bus]] from 1974 associated with the [[CP/M]] [[operating system]], the 50-pin expansion slots of the original [[Apple II]] computer from 1977 (unique to Apple), IBM's [[Industry Standard Architecture]] (ISA) introduced with the [[IBM Personal Computer|IBM PC]] in 1981, [[Acorn Computers|Acorn]]'s [[Tube (BBC Micro)|tube expansion bus]] on the [[BBC Micro]] also from 1981, IBM's patented and proprietary [[Micro Channel architecture]] (MCA) from 1987 that never won favour in the [[IBM PC compatible|clone]] market, the vastly improved [[Peripheral Component Interconnect]] (PCI) that displaced ISA in 1992, and [[PCI Express]] from 2003 which abstracts the interconnect into high-speed communication "lanes" and relegates all other functions into software protocol.
==History==
| |||