What Are Latches Used for?

Latches are single bit storage elements which are widely used in computing as well as data storage. Latches are used in the circuits like power gating & clock as a storage device. D latches are applicable for asynchronous systems like input or output ports.

Why do we use latch?

A latch has a feedback path, so information can be retained by the device. Therefore latches can be memory devices, and can store one bit of data for as long as the device is powered. As the name suggests, latches are used to "latch onto" information and hold in place.

How does latch work?

Latches are the smallest building blocks of memory. They are used in other circuits, like flip-flops and shift registers and they'll apply the input(s) to their output as long as they are enabled. Flip-flops are edge-triggered and will only change their state when they are enabled and triggered.