Which of the following is an element of control logic?

Control logic elements are fundamental components used in digital circuits and systems to perform logical operations. Each of the options listed—NOR, AND, and NOT—represents a type of logical gate that is essential for creating complex control systems.

The AND gate outputs true only when all its inputs are true, making it a critical component for decision-making processes within control logic. The NOT gate, also known as an inverter, flips the input signals; it outputs false when the input is true and vice versa, providing the capability to reverse conditions in logical operations. The NOR gate combines the functions of OR and NOT, yielding a true output only when all inputs are false; this is useful for developing conditions where specific criteria must not be met.

Since all of these gate types are foundational elements that contribute to constructing control logic circuits, the collective inclusion of NOR, AND, and NOT confirms that the right answer encompasses all these elements. This reinforces the understanding that the integration of various types of logic gates is essential for effective control system design.