Programmable Logic Devices (PLD) Questions and Answers

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Q1
Which type of PLD should be used to program basic logic functions?
  • A PLA
  • B PAL
  • C CPLD
  • D SLD
Answer: Option B
Q2
The content of a simple programmable logic device (PLD) consists of:
  • A fuse-link arrays
  • B thousands of basic logic gates
  • C advanced sequential logic functions
  • D thousands of basic logic gates and advanced sequential logic functions
Answer: Option D
Q3
Once a PAL has been programmed:
  • A it cannot be reprogrammed.
  • B its outputs are only active HIGHs
  • C its outputs are only active LOWs
  • D its logic capacity is lost
Answer: Option A
Q4
The complex programmable logic device (CPLD) contains several PLD blocks and:
  • A field-programmable switches
  • B AND/OR arrays
  • C a global interconnection matrix
  • D a language compiler
Answer: Option C
Q5
The difference between a PLA and a PAL is:
  • A the PLA has a programmable OR plane and a programmable AND plane, while the PAL only has a programmable AND plane
  • B the PAL has a programmable OR plane and a programmable AND plane, while the PLA only has a programmable AND plane
  • C the PAL has more possible product terms than the PLA
  • D PALs and PLAs are the same thing.
Answer: Option A
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