1:4 Demultiplexer Video Lecture | Analog and Digital Electronics - Electrical Engineering (EE)

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FAQs on 1:4 Demultiplexer Video Lecture - Analog and Digital Electronics - Electrical Engineering (EE)

1. What is a 1:4 demultiplexer?
Ans. A 1:4 demultiplexer, also known as a 1-to-4 demux, is a digital circuit that takes in one input and selects one of four possible outputs based on the select lines. It essentially reverses the function of a multiplexer, which combines multiple inputs into one output.
2. How does a 1:4 demultiplexer work?
Ans. A 1:4 demultiplexer works by using the select lines to determine which output to activate. The select lines are binary inputs that specify the output line to which the input signal should be directed. For example, if the select lines are "00," the input signal will be directed to the first output line, "01" for the second output line, "10" for the third output line, and "11" for the fourth output line.
3. What are the applications of a 1:4 demultiplexer?
Ans. A 1:4 demultiplexer has various applications in digital systems. Some common uses include: - Data routing: It can be used to route data from one source to multiple destinations based on the select lines. - Memory addressing: It can be used to select a specific memory location in a memory system. - Display control: It can be used to control the individual segments of a multi-digit display. - Signal decoding: It can be used to decode signals in communication systems.
4. What is the difference between a 1:4 demultiplexer and a multiplexer?
Ans. The main difference between a 1:4 demultiplexer and a multiplexer is their functionality. While a multiplexer combines multiple inputs into one output, a demultiplexer does the opposite by taking one input and selecting one of multiple outputs based on the select lines. Additionally, the number of select lines in a demultiplexer is equal to the number of outputs, whereas a multiplexer has select lines equal to the number of inputs.
5. Can a 1:4 demultiplexer be cascaded to create larger demultiplexers?
Ans. Yes, multiple 1:4 demultiplexers can be cascaded together to create larger demultiplexers with a greater number of outputs. By connecting the select lines of the demultiplexers in a cascading manner, the select lines of the overall demultiplexer can be expanded, allowing for more output possibilities.
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