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Backplane
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A backplane or backplane system is a group of electrical connectors in parallel with each other, so that each pin of each connector is linked to the same relative pin of all the other connectors, form
Major components on a PICMG 1.3 active backplane
Major components on a PICMG 1.3 active backplane
Wire-wrapped backplane from a 1960s PDP-8 minicomputer
Wire-wrapped backplane from a 1960s PDP-8 minicomputer
ISA passive backplane showing connectors and parallel signal traces on back side. Only components are connectors, capacitors, resistors and voltage in
ISA passive backplane showing connectors and parallel signal traces on back side. Only components are connectors, capacitors, resistors and voltage indicator LEDs.
A single-board computer installed into a passive backplane
A single-board computer installed into a passive backplane
Expansion card
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In computing, an expansion card, also known as an expansion board, adapter card, peripheral card or accessory card, is a printed circuit board that can be inserted into an electrical connector, or exp
Backplane
…A backplane uses plug-in cards for storage and processing. Early microcomputer systems like the Altair 8800 used a backplane for the processor and expansion cards. Backplanes are normally used in preference to cables because of their greater reliability. In a cabled system, the cables need to be flexed every time…
Example of a PCI digital I/O expansion card using a large square chip from PLX Technology to handle the PCI bus interface
Example of a PCI digital I/O expansion card using a large square chip from PLX Technology to handle the PCI bus interface
Altair 8800b from March 1976 with an 18-slot S-100 backplane which housed both the Intel 8080 mainboard and many expansion boards
Altair 8800b from March 1976 with an 18-slot S-100 backplane which housed both the Intel 8080 mainboard and many expansion boards
Rack of IBM Standard Modular System expansion cards in an IBM 1401 computer using a 16-pin gold plated edge connector first introduced in 1959
Rack of IBM Standard Modular System expansion cards in an IBM 1401 computer using a 16-pin gold plated edge connector first introduced in 1959
Configuration DIP switches in a 16-pin through-hole package as often found in ISA expansion cards from the 1980s
Configuration DIP switches in a 16-pin through-hole package as often found in ISA expansion cards from the 1980s