Programmable Logic Devices (PLD) problems
- 1. Once a PAL has been programmed:
Options- 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 Discuss
Correct Answer: it cannot be reprogrammed.
- 2. Which type of PLD should be used to program basic logic functions?
Options- A. PLA
- B. PAL
- C. CPLD
- D. SLD Discuss
Correct Answer: PAL
- 3. The complex programmable logic device (CPLD) contains several PLD blocks and:
Options- A. field-programmable switches
- B. AND/OR arrays
- C. a global interconnection matrix
- D. a language compiler Discuss
Correct Answer: a global interconnection matrix
- 4. PLAs, CPLDs, and FPGAs are all which type of device?
Options- A. SLD
- B. PLD
- C. EPROM
- D. SRAM Discuss
Correct Answer: PLD
- 5. The content of a simple programmable logic device (PLD) consists of:
Options- 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 Discuss
Correct Answer: thousands of basic logic gates and advanced sequential logic functions
- 6. The difference between a PLA and a PAL is:
Options- 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. Discuss
Correct Answer: the PLA has a programmable OR plane and a programmable AND plane, while the PAL only has a programmable AND plane
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