What is the primary function of an SR latch?

The primary function of an SR latch is to store state based on Set and Reset inputs. An SR latch is a basic memory element in digital electronics that has two inputs: Set (S) and Reset (R). When the Set input is activated, the latch changes its state to "1," indicating it is set. Conversely, when the Reset input is activated, the latch changes its state to "0," indicating it is reset.

The SR latch maintains its state until a new input command is given, making it a fundamental building block for storage elements in digital systems. This characteristic of holding onto a logical value (either 0 or 1) until instructed to change it is crucial for various applications, such as implementing memory cells or controlling state in sequential circuits.

Understanding the SR latch's role in storing state is essential for grasping how digital circuits operate, particularly in relation to memory storage and state management.