Summary I learned that sequential logic differs from combinational logic because it relies on memory to determine outputs not just the inputs I learned that latches and flip flops are basic memory elements used in sequential circuits A latch like the SR latch stores a bit of information and is level sensitive I learned that D flip flops are edge triggered and store input values on clock edges which makes them better for synchronous systems I also learned about JK flip flops which are more versatile than SR latches because they avoid invalid states and can toggle RS flip flops are a simpler version and are used for basic memory storage I learned about shift registers which are circuits that shift stored data bits left or right with each clock pulse This is useful for operations like data transfer Finally I learned that memory arrays consist of multiple storage elements like flip flops and are used to store large amounts of data forming the basis of RAM and ROM Confusion I m still confused about the specific use cases for JK RS and D flip flops I also find it difficult to understand how shift registers work in larger systems and how memory arrays are implemented efficiently It is slightly confusing how rising edge triggers a change