In electronics, a flip-flop or latch is a circuit that has two stable states and can be used to store state information – a bistable multivibrator. Such data storage can be used to store state, and such a circuit is described as sequential logic in electronics. Flip flops can store a single bit of data, i.e., 1 or 0. Registers are used to store multiple bits of data. According to digital electronics, a Register is a device that is used to store information. As a single flip flop is allowed for 1 – bit storage, n flip flops are connected to store n bits of data. Applications of Flip-Flops

• Counters.

• Frequency Dividers.

• Shift Registers.

• Storage Registers.

• Bounce elimination switch.

• Data storage.

• Data transfer.

• Latch.

  
  

  The R-S (Reset Set) flip flop is the simplest flip flop of all and easiest to understand. It is basically a device with two outputs, one output being the inverse or complement of the other. A pulse on one of the inputs to take on a particular logical state.

  
  

  The JK Flip Flop is basically a gated RS flip flop with the addition of the clock input circuitry. ... The JK Flip Flop has four possible input combinations because of the addition of the clocked input. The four inputs are “logic 1”, 'logic 0”. “No change' and “Toggle.”