Multiple choice

Programmable array logic(PAL) has

  1. a fixed AND array

  2. a fixed OR array

  3. programmable AND array an fixed OR array

  4. programmable OR array and fixe AND array
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

PAL (Programmable Array Logic) has a programmable AND array followed by a fixed OR array. Users can program the AND gates to generate desired product terms, but the OR array connections are fixed at manufacturing time. This gives PAL its flexibility while keeping cost lower than fully programmable PLA.

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