Gate naming conventions: Confirm whether the standard abbreviation for the exclusive-OR gate is “XOR.”
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ACorrect
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BIncorrect
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COnly valid in arithmetic circuits, not logic
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DDepends on manufacturer notation
Answer
Correct Answer: Correct
Explanation
Introduction / Context:Across textbooks, datasheets, and CAD libraries, consistent abbreviations help engineers interpret schematics quickly. The exclusive-OR function is pervasive in adders, parity circuits, and comparators, so its standardized shorthand is important.
Given Data / Assumptions:
- Exclusive-OR is a logic operation with symbol often drawn as OR with an additional curved line.
- Written symbols include the circle-plus and alphabetic abbreviations.
Concept / Approach:“XOR” is the widely adopted abbreviation for exclusive-OR in signal names (e.g., XOR2), IP block names, and HDL code comments. Alternatives like “EOR” appear historically, but XOR is dominant in digital design practice.
Step-by-Step Solution:
Identify the logic operation: exclusive-OR.Check common usage in literature and toolchains: XOR.Conclude that the statement is correct.Verification / Alternative check:Look at HDL operators: in many languages, the caret ^ denotes XOR, and library cell names include “XOR.”
Why Other Options Are Wrong:
Incorrect: Conflicts with standard practice.Only valid in arithmetic circuits: XOR is fundamental logic, not limited to arithmetic contexts.Depends on manufacturer: Minor variations exist, but XOR remains standard.Common Pitfalls:Confusing XOR with OR; misreading XNOR (exclusive-NOR) as XOR.
Final Answer:Correct