Solution

The correct answer is Flip-flop

Key Points

• Flip-flop:
  • A flip-flop is a bistable multivibrator, a circuit that has two stable states and can be used to store binary information (0 or 1).
  • It is the fundamental building block of digital memory elements and is widely used for storing a single bit of data.

Additional Information

• Encoder:
  • An encoder is a combinational circuit that converts a set of input signals into a coded output representing the input.
  • It is commonly used in communication systems and data transmission.
• Decoder:
  • A decoder is a combinational circuit that performs the opposite function of an encoder. It converts coded input into a set of output signals.
  • Decoders are often used in digital systems to select a particular output based on the input code.
• Register:
  • A register is a group of flip-flops that are used to store multiple bits of data.
  • It can be used for various purposes, including data storage, temporary storage during processing, or as part of a CPU to store operands and results of operations.