Explanation: A demultiplexer sends a single input to multiple outputs, depending on the select lines. For one input, the demultiplexer gives several outputs. That is why it is called a data distributor. ... Demultiplexer converts single input into multiple outputs.

How many select line are required for a 1 to 8 demultiplexer?

A 1 to 8 demultiplexer consists of one input line, 8 output lines and 3 select lines. Let the input be D, S1 and S2 are two select lines and eight outputs from Y0 to Y7. It is also called as 3 to 8 demux because of the 3 selection lines.

How many and gates are required for a 1 to 8 Multiplexer *?

For a 1 to 8 multiplexer a total of 8 AND gates are required.

How many and gates are required for a 1 to 4 multiplexer?

The below figure shows the logic circuit of 4:1 MUX which is implemented by four 3-inputs AND gates, two 1-input NOT gates, and one 4-inputs OR gate. In this circuit, each data input line is connected as input to an AND gate and two select lines are connected as other two inputs to it.

How many input and output does a demultiplexer need?

De-multiplexer: De-multiplexer is a device that has a signal inputs line and multiple line outputs. The given figure has one input and two outputs. Hence it is De-multiplexer.

DSBM MCQ 3: CHANNELS OF DISTRIBUTION

15 related questions found

What is meant by demultiplexer?

: an electronic device that separates a multiplex signal into its component parts.

How is an encoder different from a decoder Mcq?

Explanation: an encoder is a combinational circuit encoding the information of 2n input lines to n output lines, thus producing the binary equivalent of the input. ... thus, an encoder different from a decoder because of the output of an encoder is a binary code for 1-of-n input.

What is full adder circuit?

A full adder is a digital circuit that performs addition. Full adders are implemented with logic gates in hardware. A full adder adds three one-bit binary numbers, two operands and a carry bit. The adder outputs two numbers, a sum and a carry bit.

What is sum and carry half adder?

The Half-Adder is a basic building block of adding two numbers as two inputs and produce out two outputs. The adder is used to perform OR operation of two single bit binary numbers. The augent and addent bits are two input states, and 'carry' and 'sum 'are two output states of the half adder.

What does Minuend and Subtrahend denotes in a subtractor?

What does minuend and subtrahend denotes in a subtractor? Explanation: Minuend and subtrahend are the two bits of input of a subtractor. If A and B are the two inputs of a subtractor then A is called minuend and B as subtrahend. ... Explanation: A full subtractor has 3 input bits and two outputs bits BORROW and DIFFERENCE.

What does the direct line on the clock input of a JK flip flop mean?

Explanation: The direct line on the clock input of a J-K flip-flop mean level triggered. Whereas the presence of triangle symbol implies that the flip-flop is edge-triggered.

Which one of the following is DAC?

Which of the following are used in DAC? Explanation: Ladder network of resistors are employed for the conversion of digital data to analog data. 2.

How many NOT gates are required for the construction of a 4 to 1 multiplexer blank 2?

How many NOT gates are required for the construction of a 4-to-1 multiplexer? Explanation: There are two NOT gates required for the construction of 4-to-1 multiplexer. x0, x1, x2 and x3 are the inputs and C1 and C0 are the select lines and M is the output.

How many and gates are required for a 1 to 16 demultiplexer?

1 to 16 demultiplexer has one input data, four select lines A, B, C and D and 16 output lines Y0 to Y15. This is implemented using AND and NOT gate. 1 to 16 demultiplexer is implemented using the logic circuit below. This can be implemented using 1 to 8 demultiplexer, 1 to 4 demultiplexer and 1 to 2 demultiplexer.

Why is a decoder used in digital electronics?

In Digital Electronics, discrete quantities of information are represented by binary codes. ... The name “Decoder” means to translate or decode coded information from one format into another, so a digital decoder transforms a set of digital input signals into an equivalent decimal code at its output.

What is D flip flop?

Glossary Term: D Flip-Flop

Definition. A D (or Delay) Flip Flop (Figure 1) is a digital electronic circuit used to delay the change of state of its output signal (Q) until the next rising edge of a clock timing input signal occurs.

What is meant by RS flip flop?

The RS stands for SET/RESET. The flip-flop is reset back to its original state with the help of RESET input and the output is Q that will be either at logic level “1” or logic”0”. It depends upon the set/reset condition of the flip-flop.

What is SR flip flop?

The SR flip flop is a 1-bit memory bistable device having two inputs, i.e., SET and RESET. The SET input 'S' set the device or produce the output 1, and the RESET input 'R' reset the device or produce the output 0. ... The SR flip flop stands for "Set-Reset" flip flop.

Why do we use GREY codes Mcq?

Why do we use gray codes? Explanation: Today, Gray codes are widely used to facilitate error correction in digital communications such as digital terrestrial television and some cable TV systems. Explanation: The reflected binary code is also known as gray code because one digit reflected to the next bit.

Can an encoder be called as multiplexer *?

Explanation: a multiplexer or mux is a combination circuit that contains more than one input line, one output line and more than one selection line. whereas, an encoder is also considered a type of multiplexer but without a single output line and without any selection lines.

Why latches are called memory devices?

Why latches are called memory devices? Explanation: Latches can be memory devices, and can store one bit of data for as long as the device is powered. Once device is turned off, the memory gets refreshed. Explanation: A latch has two stable states, following the principle of Bistable Multivibrator.

Why do we use demultiplexer?

Demultiplexer is used to connect a single source to multiple destinations. ... Demultiplexer are also used for reconstruction of parallel data and ALU circuits. Communication System – Communication system use multiplexer to carry multiple data like audio, video and other form of data using a single line for transmission.

What is demultiplexer in data communication?

Demultiplex is a process reconverting a signal containing multiple analog or digital signal streams back into the original separate and unrelated signals. Although demultiplexing is the reverse of the multiplexing process, it is not the opposite of multiplexing.

What are the advantages of demultiplexer?

Advantages of Demultiplexers

• Transmission of Audio/Video signals requires combination of Multiplexers and Demultiplexers.
• They are also used as decoders in security systems like banking sectors.
• Combination of Demuxes with Muxes increases the efficiency of the communication system.