Difficulty: Easy
Correct Answer: Generic Array Logic
Explanation:
Introduction / Context:
PALs (Programmable Array Logic) and GALs (Generic Array Logic) are classic small programmable logic devices used to replace multiple fixed SSI/MSI gates. Knowing the correct expansion of common acronyms prevents confusion when reading datasheets, app notes, and historical documentation in digital design courses and labs.
Given Data / Assumptions:
Concept / Approach:
Manufacturers introduced GALs as a more flexible, electrically erasable alternative to one-time programmable PALs. Hence the naming emphasizes “Generic” capability rather than “Programmable” in the acronym itself. GAL devices keep the same basic AND-OR product-term architecture while allowing multiple reprogramming cycles.
Step-by-Step Clarification:
Verification / Alternative check:
Device markings and family names (e.g., GAL16V8, GAL22V10) in vendor literature explicitly expand to Generic Array Logic. The architectural descriptions match PAL-like devices with reprogrammable technology (e.g., EEPROM/flash) instead of fuse-only arrays.
Why Other Options Are Wrong:
Common Pitfalls:
Final Answer:
Generic Array Logic
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