- fpga
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A field-programmable gate array is a semiconductor device containing programmable logic components called "logic blocks", and programmable interconnects.
Logic blocks can be programmed to perform the function of basic logic gates such as AND, and XOR, or more complex combinational functions such as decoders or mathematical functions.
In most FPGAs, the logic blocks also include memory elements, which may be simple flip-flops or more complete blocks of memory
A hierarchy of programmable interconnects allows logic blocks to be interconnected as needed by the system designer, somewhat like a one-chip programmable breadboard.
Logic blocks and interconnects can be programmed by the customer or designer, after the FPGA is manufactured, to implement any logical function—hence the name "field-programmable".
Source: Wikipedia (http://en.wikipedia.org/wiki/Fpga)
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