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Digital ElectronicsProgrammable Logic Devices

Compared with a PLA, a traditional PAL typically uses?

  • AProgrammable AND array and fixed OR array
  • BFixed AND array and programmable OR array
  • CProgrammable RAM cells only
  • DNo AND-OR structure
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Correct Answer: A. Programmable AND array and fixed OR array
Explanation: A conventional PAL has a programmable AND plane feeding a fixed OR plane, while a PLA normally allows both planes to be programmed.
Reference: Standard digital electronics: PAL architecture
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