Programmable Logic Devices (PLD) Questions and Answers
Programmable Logic Devices (PLDs) are essential in digital electronics for implementing complex logic functions efficiently. They replace traditional logic circuits by offering flexibility in circuit design. In exams like SSC JE, GATE, and DRDO, aptitude questions and answers related to PLD structures, FPGA, and CPLD configurations are frequently asked. Mastering these concepts helps students understand digital system design at a practical level. Practice aptitude questions with detailed solutions and reasoning to strengthen your preparation for competitive electronics exams.
Programmable Logic Devices (PLD)
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5 questions
1. Which type of PLD should be used to program basic logic functions?
- PLA
- PAL
- CPLD
- SLD
2. The content of a simple programmable logic device (PLD) consists of:
- fuse-link arrays
- thousands of basic logic gates
- advanced sequential logic functions
- thousands of basic logic gates and advanced sequential logic functions
3. Once a PAL has been programmed:
- it cannot be reprogrammed.
- its outputs are only active HIGHs
- its outputs are only active LOWs
- its logic capacity is lost
4. The complex programmable logic device (CPLD) contains several PLD blocks and:
- field-programmable switches
- AND/OR arrays
- a global interconnection matrix
- a language compiler
5. The difference between a PLA and a PAL is:
- the PLA has a programmable OR plane and a programmable AND plane, while the PAL only has a programmable AND plane
- the PAL has a programmable OR plane and a programmable AND plane, while the PLA only has a programmable AND plane
- the PAL has more possible product terms than the PLA
- PALs and PLAs are the same thing.