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Question 313

In Figure E6-3, which is the schematic symbol for the NOT operation (inversion)?

Six schematic symbols of digital logic elements, numbered 1 through 6.
  1. 2
  2. 4
  3. 5Correct answer
  4. 6

Explanation

Symbol 5 is a single-input triangle with an inversion bubble at its tip, the standard drawing of an inverter, which performs the NOT operation. Symbols 2 and 4 do invert, but only after a two-input AND or OR function, and symbol 6 is the exclusive-OR gate with its doubled curved input line.

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Question 313: In Figure E6-3, which is the schematic symbol for the NOT… · FCC Amateur Extra Class (Element 4) · Questena