Acronym check in digital logic: “LUT” correctly expands to “look-up table.” Indicate whether this terminology usage is accurate in FPGA/CPLD contexts.

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Solve this multiple-choice question and choose the correct option.

Accepted Answer

Introduction / Context: LUTs are the basic logic resources in many FPGA architectures and also appear conceptually in CPLDs and synthesis discussions. This question checks recognition of a core acronym encountered in vendor literature and academic texts. Given Data / Assumptions: LUT is a small memory that maps input address bits to a stored output bit pattern. Vendors use “LUT” consistently to mean “look-up table.” The term is not limited to any one vendor or family. Concept / Approach: A look-up table implements combinational functions by storing truth-table entries. For n inputs, the LUT stores 2^n output values. Synthesis tools map boolean logic to LUTs in FPGAs, making this acronym central to modern digital design. Step-by-Step Solution: Recall LUT definition → memory-based truth-table element.Map to term expansion → LUT = look-up table.Conclude the statement correctly reflects industry usage. Verification / Alternative check: Check any FPGA architecture overview; LUT terminology is universal. Why Other Options Are Wrong: Incorrect: Would deny a standard expansion.Legacy definition; modern usage differs: The meaning has remained consistent.Applies only to ASIC standard cells: LUTs are FPGA-centric, not ASIC standard-cell primitives. Common Pitfalls: Confusing LUT with RAM blocks or ROM macros; LUTs are tiny and used for arbitrary logic mapping. Final Answer: Correct

Acronym check in digital logic: “LUT” correctly expands to “look-up table.” Indicate whether this terminology usage is accurate in FPGA/CPLD contexts.

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