PLD Abbrev. for programmable logic device.
A form of PAL
in which the outputs emerge through output cells, an output cell being a logic circuit
that is programmable for a number of characteristics. These characteristics include the choice of positive
or negative logic
, whether the output can be used as an input, whether it is to be fed back into the circuit, whether it is to emerge via a latch
, and whether it is to be tri-state
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