How does multiplexer know which line to select, Computer Engineering

Assignment Help:

How does multiplexer know which line to select?

This is managed by select lines. The select lines provide communication among different components of a computer. Now let's see how multiplexer also called as MUX. For simplicity we will take illustration of 4 ×1 MUX it implies that there are 4 input lines associated to 1 output line. For the sake of consistency we would call input line as I and output line as O and control line a selection line S or enable as E.

Please notice the way in that S0 and S1 are associated in circuit. To 'a' AND gate S0 and S1 are inputted in complement form which means 'a' gate will output I0 when both selection lines have a value 0 that means S¯0  = 1 and S¯1   = 1, which implies that S0= 0 and S1=0 and therefore first entry in truth table. Please note that at S0 = 0 and S1 = 0 AND gate 'b', 'c', 'd' will provide 0 output and when all these outputs will pass OR gate 'e' they will provide I0 as output for this case. Which is for S0=0 and S1=0 output becomes I0 which in another words can be called as 'For S0 = 0 and S1 = 0, I0 input line is triggered by MUX'. In the same way other entries in truth table are respective to logical nature of figure. Thus by having two control lines we can have a 4×1 MUX. To have 8×1 MUX we should have 3 control lines or with 3 control lines we can make 23 = 8 it implies that 8×1 MUX. In the same way with 'n' control lines we could have 2n×1 MUX. Another parameter that is principal in MUX design is a number of inputs to AND gate. These inputs are decided by voltage of gate that generally supports a maximum of 8 inputs to a gate. 

Where can these devices used in computer? Multiplexers are used in digital circuits for data and organized signal routing.  We have seen a theory where out of 'n' input lines 1 can be triggered so we have a reverse concept it implies that if we have one input line and data is passed to one of the possible 2n lines where 'n' denotes number of selection lines. This operation is known as Demultiplexing.


Related Discussions:- How does multiplexer know which line to select

Overcoming global issues in e-commerce, E-commerce advance tremendous chanc...

E-commerce advance tremendous chance by permitting industrialist to buy Materials at a low price internationally. Also they give companies the opportunity to sell to universal stor

Briefly explain register-to-register architecture, Register-to-Register Arc...

Register-to-Register Architecture In this organization results and operands are not accessed straight from main memory by scalar or vector registers. The vectors that are neede

explain compiler, Compiler is used to change the high-level language progr...

Compiler is used to change the high-level language program into machine code at a time. It doesn't needs special instruction to store in a memory, it keeps automatically. The imple

Link your documents to site, Images in the top area of Compass home page gu...

Images in the top area of Compass home page guide visitors to specific pages on the site. Now you will add links for navigation buttons. You will see that there are some ways to

Define optimistic synchronization, Q. Define Optimistic Synchronization? ...

Q. Define Optimistic Synchronization? Optimistic Synchronization: This method too updates atom by requester process however sole access is granted after atomic operation by abo

Transfer data among computers on the internet, Tool that is used to transfe...

Tool that is used to transfer data/files among computers on the Internet TCP (Transfer control protocol)

Find the maximum and minimum number-binary, What is the maximum and minimum...

What is the maximum and minimum number in the range of a 7-digit number for each of the following cases? Express all numerical answers in both the original base and its decimal (ba

Differentiate between the message and method in c++, Message in C++ : *...

Message in C++ : * Objects converse by sending messages to each other. * A message is sent to invoke a method in C++.   Method in C++: * Gives response to a message

What is concurrent control, What is concurrent control? Control resides...

What is concurrent control? Control resides concurrently in various independent objects, every a separate task. A task can wait for input but other task continues implementatio

Design issues of interconnection network, Design Issues Of Interconnection ...

Design Issues Of Interconnection Network The following are the problems, which should be considered while preparing an interconnection network. 1)   Dimension and size of n

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd