What is a multiplexer?a)It is a type of decoder which decodes several inputs and gives one outputb)A multiplexer is a device which converts many signals into onec)It takes one input and results into many outputd)It is a type of encoder which decodes several inputs and gives one outputCorrect answer is option 'B'. Can you explain this answer?

Question

Answer

A multiplexer, also known as a mux, is a device used in digital circuits to combine multiple input signals into a single output signal. It is commonly used in communication systems, digital data processing, and various other applications. The correct answer to the question is option 'B', which states that a multiplexer is a device that converts many signals into one.

Here is a detailed explanation of why option 'B' is the correct answer:

What is a multiplexer?
A multiplexer is a digital circuit that selects one of many input signals and forwards it to a single output line. It is often represented with the symbol 'MUX'. The selection of the input signal is controlled by a set of control signals, known as select lines.

Working Principle
The working principle of a multiplexer is based on the concept of digital switching. It has multiple input lines, one output line, and select lines. The number of input lines depends on the configuration of the multiplexer. For example, a 4-input multiplexer will have four input lines.

Functionality
The multiplexer works by using the select lines to enable one of the input lines and ignore the others. The selected input signal is then passed through to the output line. The selection process is based on the binary value of the control signals. Each control signal combination corresponds to a specific input line.

Advantages and Applications
- Multiplexers are used in communication systems to combine multiple data streams into one transmission line, thus increasing the efficiency of data transmission.
- They are used in digital data processing to select data from multiple sources and route it to the desired destination.
- Multiplexers can also be used for data storage and retrieval, as they allow multiple inputs to share a single output line.

In conclusion, a multiplexer is a device that combines multiple signals into one output signal. It is widely used in various digital applications and plays a crucial role in improving the efficiency of data transmission and processing.

Answer

A multiplexer (or MUX) is a device that selects one of several analog or digital input signals and forwards the selected input into a single line, depending on the active select lines.

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