XNOR Symbol ⊙

Copying XNOR Symbol should produce ⊙, not an image or a look-alike. ⊙ is U+2299 CIRCLED DOT OPERATOR and is sometimes used as an XNOR or logical-equivalence operator: the result is true when two inputs have the same truth value. There is no single universally used XNOR character; circuit diagrams, ⇔, ≡, and overlined XOR notation may be preferred by a given standard. XNOR is the equality function for two Boolean inputs: the output is true for 0,0 and 1,1, and false when the inputs differ. Textbooks and tools vary between ⊙, ⇔, an XOR sign with negation, or a gate drawing with an output bubble. Because no single textual form is universal, define the chosen notation beside the truth table. This page uses ⊙ as a copyable convention and does not claim that every circuit standard assigns that character to XNOR. The examples show ⊙ in contexts such as Unicode sequence for XNOR Symbol: U+2299; HTML decimal: ⊙; HTML hexadecimal: ⊙; CSS escapes: 2299; Accessible text label: XNOR Symbol. Additional use contexts recorded for ⊙ are Truth tables; Digital logic; Logic education; Boolean algebra. Formatting checks are equally specific: While preparing logic education, compare ⊙ with ⇔ and ≡, then keep the version whose meaning matches the source.; Encode xnor symbol as UTF-8 or the numeric references ⊙ and ⊙ so the published text remains searchable and selectable.; Give ⊙ the readable label “XNOR Symbol” wherever the surrounding sentence, formula, score, table, or control does not already state the meaning.; Test xnor symbol in the final font, mobile layout, PDF export, copy workflow, and screen-reader output before release.; In boolean algebra, identify ⊙ as XNOR Symbol and explain the exact role it performs before the reader relies on it.. The page warns against Converting ⊙ into an image even though selectable Unicode text is appropriate for xnor symbol.; Publishing xnor symbol without checking the distinction from ≡.; Using ⊙ as the only accessible name of a button, diagram item, formula token, status message, or technical label.; Using ⊕ where ⊙ is required changes the intended xnor symbol or introduces a different notation.. For visual comparison, check ⊕ Circled plus Common XOR operator; ⇔ Left-right double arrow Logical equivalence; ≡ Identical to Equivalence or identity in mathematics rather than substituting them automatically. One practical question is “Which HTML form reproduces XNOR Symbol?” The recorded answer is: Use literal UTF-8 ⊙, decimal references ⊙, or hexadecimal references ⊙; do not substitute ⊕. For copy and paste, retain ⊙ exactly. That preserves U+2299, keeps search intent focused, and prevents a similar-looking mark from replacing XNOR Symbol.