An SR latch (Set-Reset latch) is a basic digital storage circuit used in electronics and cybersecurity hardware. It consists of two inputs, labeled S (Set) and R (Reset), and two outputs, Q and Q̅ (Q bar). The SR latch can store one bit of information, maintaining its output state until an input changes it. When the Set input is triggered, the latch outputs a high signal (Q=1); when the Reset input is triggered, it outputs a low signal (Q=0). SR latches are fundamental components in memory devices, sequential logic circuits, and security systems, where maintaining or switching states is essential for data retention and secure operations.