Editing Crossbar switch (section)

===Semiconductor===
Semiconductor implementations of crossbar switches typically consist of a set of input [[Buffer amplifier|amplifiers]] or retimers connected to a series of [[Interconnect (integrated circuits)|interconnects]] within a semiconductor device. A similar set of interconnects are connected to output amplifiers or retimers. At each cross-point where the bars cross, a pass transistor is implemented which connects the bars. When the pass transistor is enabled, the input is connected to the output.

As computer technologies have improved, crossbar switches have found uses in systems such as the [[multistage interconnection networks]] that connect the various processing units in a [[uniform memory access]] parallel processor to the array of memory elements.