A demultiplexer, also known as a data distributor, is a combinational circuit that takes a single input and forwards it to one of multiple outputs based on the select signal. It has one input line, M select lines, and N output lines. The select input determines which output line the input signal will be forwarded to.
A multiplexer, also known as a data selector, is a combinational circuit that selects data from multiple inputs and forwards one of them to a single output line based on the select signals. It has N input lines, M select lines, and one output line. The select inputs determine which input line is selected and forwarded to the output line.
A decoder is a combinational circuit that converts a binary code into a set of output signals. It has N input lines and 2N output lines. The decoder takes the binary code on its N input lines and activates the output line corresponding to the binary code.
Combinational circuits are types of digital circuits that output a binary value, based on a set of input signals. These circuits are generally constructed using logic gates such as AND, OR, NOT, NAND, and NOR gates. They do not have any memory elements or feedback loops, meaning the output only depends on the current input conditions.
Combinational circuits are used for tasks that involve mathematical computations, such as adders and multipliers, as well as logic operations, such as reduction and comparison. They are widely used in digital systems and applications such as computers, calculators, and communication systems.