What does the term 'Negative Logic' refer to in digital circuits?

Negative logic is a representation in digital circuits where a logic level is assigned to the opposite of what is typically expected in standard positive logic systems. In negative logic, a higher voltage level is interpreted as a logic '0' and a lower voltage level is interpreted as a logic '1'. This means that when the voltage is high, it is signaling a false condition (0), and when the voltage is low, it indicates a true condition (1).

This concept is often utilized in certain applications and designs, particularly when interfacing with components that are designed to work with negative logic levels. Understanding negative logic is important for correctly interpreting signals within the context of digital electronics, especially when dealing with integrated circuits or specific types of logic gates that adopt this convention.