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Consider the following statements:  A multiplexer (a) Selects one of the several inputs and transmits it to a single output (b) Routes the data from a single input to many outputs (c) Converts parallel data into serial data (d) Is a combinational circuit Which of these statements are correct?

Consider the following statements:  A multiplexer (a) Selects one of the several inputs and transmits it to a single output (b) Routes the data from a single input to many outputs (c) Converts parallel data into serial data (d) Is a combinational circuit Which of these statements are correct? Correct Answer (a), (c) and (d) only

  • A multiplexer is Many to one data selector.
  • A multiplexer selects one of the many data available at its input depending on the bits on the select line.
  • For 2n inputs, there are n select lines that determine, which input is to be connected to the output.

 

A multiplexer is used for Parallel to serial data conversion with the help of a counter as shown:


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  • The Q-outputs of the modulus-8 counter is connected to the data select inputs of an 8- multiplexer.
  • The first byte (8-bit) of parallel data is applied to the multiplexer inputs.
  • As the counter goes through a binary sequence from 0 to 7, each bit beginning with D0 is sequentially selected and passed through the multiplexer to the output line.
  • After 8 clock pulses, the data byte is converted to a serial format and sent out on the transmission line.

Related Questions

Consider the following statements : A multiplexer 1. selects one of the several inputs and transmits it to a single output. 2. routes the data from a single input to one of many outputs. 3. converts parallel data into serial data. 4. is a combinational circuit. Which of the above statements are correct? 
Assertion (A) : A multiplexer (MUX) is a device which selects one of the many inputs to a single output. Reason (R): A digital multiplexer is a sequential circuit that selects binary information from one of the many input line sand directs it to a single output line
Which of the following statements is/are correct? 1. A system is said to be Finite Impulse Response (FIR), if the output samples of the system depend only on the present input and a finite number of past or previous input samples. 2. If the output of a system y(n) depends only on the present input and past inputs, but not on past outputs, then it is called a non-recursive system. 3. If the output of a system y(n) depends only on the present input and past inputs, but not on past outputs, then it is called a recursive system.
Based on the paragraph given below answer the following question: The traditional methods of combinational circuits involve simplification and realization using gates. Using these methods, complex functions have been integrated and are easily available in IC form. There is an attractive array of devices like a multiplexer, demultiplexer, decoders, comparators, parity generators/checkers, which significantly reduce IC package count there by reducing the system cost. The system design is greatly simplified because the laborious and time-consuming simplification methods are generally not required with these devices. This also improves the reliability of the system by reducing the number of external wired connections. But they have some limitations as well. Different memories like ROM, PROM can also be used to implement combinational circuits without much simplification.   Consider the following digital circuits. 1. Multiplexers 2. Read Only Memories 3. D-latch 4. Circuit as shown in figure below Which of these come under the class of combinational circuits?
Statement (I): The multiplexer is essentially an electronic switching device which enables each of the inputs to be sampled in turn. Statement (II): A multiplexer is a circuit that is able to have inputs of data from a number of sources and then, by selecting an input channel, gives an output from just one of them.
Based on the paragraph given below answer the following question: The traditional methods of combinational circuits involve simplification and realization using gates. Using these methods, complex functions have been integrated and are easily available in IC form. There is an attractive array of devices like a multiplexer, demultiplexer, decoders, comparators, parity generators/checkers, which significantly reduce IC package count there by reducing the system cost. The system design is greatly simplified because the laborious and time-consuming simplification methods are generally not required with these devices. This also improves the reliability of the system by reducing the number of external wired connections. But they have some limitations as well. Different memories like ROM, PROM can also be used to implement combinational circuits without much simplification.   A ROM is to be used to implement a “Squarer”, which outputs the square of a 3-bit number. What must be the size of the ROM?
Based on the paragraph given below answer the following question: The traditional methods of combinational circuits involve simplification and realization using gates. Using these methods, complex functions have been integrated and are easily available in IC form. There is an attractive array of devices like a multiplexer, demultiplexer, decoders, comparators, parity generators/checkers, which significantly reduce IC package count there by reducing the system cost. The system design is greatly simplified because the laborious and time-consuming simplification methods are generally not required with these devices. This also improves the reliability of the system by reducing the number of external wired connections. But they have some limitations as well. Different memories like ROM, PROM can also be used to implement combinational circuits without much simplification. The minimum number of selection lines required for selecting one of the 16 inputs are:
Question : On a T.V. channel, four serials A, B, C and D were screened, one on each day, on four consecutive days but not necessarily in that order. On which day was the serial C screened ?

Statements :
I. The first serial was screened on 23rd, Tuesday and was followed by serial D.
II. Serial A was not screened on 25th and one serial was screened between serials A and B.
A combinational circuit is built using a D flip-flop with a propagation delay of 20ns and setup time of 30ns. Another multiplexer used has a combinational circuit delay of 10ns. What is the minimum clock period should be applied to the circuit to operate properly?
A sports competition was organized in a school including six sports, of which only three had to be selected under the following conditions: 1. One who selects Football had to select Cricket also and vice versa. One who selects Cricket cannot select Basketball. 2. One who selects Badminton or Tennis cannot select Volleyball. 3. If a student selects Volleyball as one of the sports, then the other two sports can be: