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Digital ElectronicsProgrammable Logic Devices

In a programmable logic array (PLA), which logic planes are normally programmable?

  • AAND plane only
  • BOR plane only
  • CBoth AND and OR planes
  • DNeither plane
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Correct Answer: C. Both AND and OR planes
Explanation: A PLA generally has programmable AND and programmable OR arrays, providing more flexible sum-of-products implementation than a PAL with a fixed OR structure.
Reference: Standard digital electronics: PLA architecture
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