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Which of the following statement is true for Programmable Logic array (PLA)?
(a) Fixed AND array and Fused programmable OR array
(b) Fused programmable AND array and Fixed OR array
(c) Fused programmable AND array and Fused programmable OR array
(d) None of the above
 

1 Answer

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A Programmable Logic Array (PLA) consists of an array of AND gates and an array of OR gates.

• The inputs connect to the AND gates.

• The output of the AND gates connect to the inputs of the OR gates.

    Each input to the AND gates goes through a “fuse” that can be permanently broken or blown.

• If the fuse is broken, that input value does not go to that AND gate.

The OR gate inputs also go through a set of fuses.

Hence they are known as Fused programmable AND array and Fused programmable OR array .

Option C is the Correct Answer.

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