Illustrate function of 4-input multiplexer using basic gates, Computer Engineering

Illustrate functional diagram of digital multiplexer. Write the scheme of a 4- input multiplexer using basic gates (AND/OR/NOT) and explain its operation.

Ans:

Multiplexer: Data selector or MUX is a logic circuit selects binary information from one of several input and directs this to a single output line. Selection of the individual input line is controlled through a set of selection lines. Generally there are 2n input lines and respectively n selection lines.

Here 4 inputs that are I1 I0 I2 I3 and two selection line as S0 and S1. Depending on the bit combination of S0 and S1 one of the inputs is moved to the output. Fundamentally there is a decoder circuit along with one input for each bit of information and one OR gate linked to the output. If So, Si = 00, then first AND gate will contain the two inputs as one output will depend upon I0. At similar time outputs of all other AND gates are Zero.

The multiplexer is a combinational circuit that is individual most broadly utilized standard circuit in digital design. This has N select lines 2N inputs and a particular output.

Multiplexer:-

Y = S‾1S‾0 I0 + S‾1S0 I1 + S1S‾0I2  + S1S0 I3

Truth table of 4x1 Mux

Select inputs

Output

S1

S0

Y

0

0

I0

0

1

I1

1

0

I2

1

1

I3

1121_Circuit Diagram of 4 X 1 MUX using basic gate.png

Circuit Diagram of 4 X 1 MUX using basic gate

Posted Date: 5/4/2013 5:36:11 AM | Location : United States







Related Discussions:- Illustrate function of 4-input multiplexer using basic gates, Assignment Help, Ask Question on Illustrate function of 4-input multiplexer using basic gates, Get Answer, Expert's Help, Illustrate function of 4-input multiplexer using basic gates Discussions

Write discussion on Illustrate function of 4-input multiplexer using basic gates
Your posts are moderated
Related Questions
Explain the raster scan monitors The refresh process must also be performed for raster scan monitors. Most television monitors are raster scan display devices : one scan-line a

Explain the term Overlays. An overlay is an element of program that has the same load origin as several other part of the program. These are used for reduce the main memory req

Q. Write an interrupt routine to handle 'division by zero'? This file can be loaded just like a COM file though makes itself permanently resident until the system is running.

Syntax of $display and $strobe -  $display ("format_string", par_1, par_2, ... ); -  $strobe ("format_string", par_1, par_2, ... ); -  $monitor ("format_string", par_1, p

Q. When an object travels with constant velocity does its average velocity during any time interval differ from its instantaneous velocity at any instant? Answer:- No It i

Q. Explain about Quine McKluskey Method? A tabular method was proposed to deal with increasing number of variables called Quine McKluskey Method. This method is appropriate for

Q. Explain types of assembly programs? Assembly language programs can be written in two manners: COM Program: Having all segments as part of one segment EXE Program: that hav

Q. Show the Comparison of ASCII and EBCDIC? EBCDIC is an easier to employ code on punched cards due to BCD compatibility. But ASCII has some of major benefits on EBCDIC. These

Q. Show the Bus and Memory Transfers? A digital computer has many registers and rather than connecting wires amid all registers to transfer information between them a common bu

This is a high-level matrix/array language with control flow statements, functions, data structures, input/output, and object-oriented programming features. It permits both "progra