Subelement E: Digital Logic— Topic 34: Logic Gates
Question 3-34E5
Element 3 (GROL)What is a characteristic of a NOT gate?
Explanation
A NOT gate, also known as an inverter, is a fundamental building block in digital logic circuits, commonly found in amateur radio equipment for control, processing, and modulation. Its defining characteristic is to output the opposite logic state of its input.
Therefore, if the input is a logic "1" (high voltage), the output will be a logic "0" (low voltage). Conversely, if the input is a logic "0," the output will be a logic "1." This inversion is precisely what option B describes.
Options A and C describe characteristics more aligned with a gate that enables or disables data flow based on an input condition, not the direct logical inversion performed by a NOT gate. Option D describes a buffer or a direct connection where the output mirrors the input, which is the opposite function of a NOT gate.
Related Questions
3-34E3 What is a characteristic of an OR gate?3-34E4 What is a characteristic of a NOR gate?3-34E6 Which of the following logic gates will provide an active high out when both inputs are active high?3-35E1 In a negative-logic circuit, what level is used to represent a logic 0?3-35E2 For the logic input levels shown in Figure 3E12, what are the logic levels of test points A, B and C in this circuit? (Assume positive logic.)