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

Capacity and access speed: PC hard disk drive capacity (measured in GB). The vertical axis is logarithmic, so the accurate line corresponds to exponential growth.  By using

Some pure object oriented languages are Smalltalk, Eiffel,  Java, Sather.

Design a easy (text-based/ graphical) UI for  your program.  The user should be encouraged for  parameter values for  the particular protocol simulation. For  example, the user sho

What is GDPro and  MagicDraw UML GDPro : This  is a full suite of code  management tools and UML. MagicDraw UML: UML diagrams fully support this: MagicDraw RConverter a

What is a subroutine? A subroutine is a named, independent section of C code that performs a particular task and optionally returns a value to the calling program.

Q. Concurrently read concurrently write? It is one of the models derived from PRAM. In this model the processors access the memory locations simultaneously for reading and writ

It allows code reusability. Reusability saves time in program development. It encourages the reuse of proven and debugged high-quality software, thus decreasing problem after a sys

Front page is a software used to make a webpage.

What is the significance of the memory table 'SCREEN'? At runtime, attributes for every screen field are stored in the memory table called 'SCREEN'.  We need not declare this