What do you mean by decoders, Computer Engineering

Assignment Help:

Q. What do you mean by Decoders?

Decoder transforms one kind of coded information to other form. A decoder has n inputs and one enable line (sort of selection line) and 2n output lines. Let's see an example of 3:8 decoder that decodes a 3 bit information and there is just one output line that gets value 1 or in other words out of 23 = 8 lines just 1 output line is selected. So depending on selected output line information of 3 bits can be identified or decoded.           

921_What do you mean by Decoders.png

432_What do you mean by Decoders1.png

949_What do you mean by Decoders2.png

Figure:  3×8 decoder

Please be certain while constructing logic figure wherever values in the truth table are appearing as zero in input and one in output the input must be fed in complemented form for example first 4 entries of truth table comprises 0 in I0 position and therefore I0 value 0 is passed by a NOT gate and fed to AND gates 'a', 'b', 'c' and'd' that implies that these gates shall be triggered/selected only if I0 is 0. If I0 value is 1 then not any of the top 4 AND gates can be selected. Similar kind of logic is valid for I1. Please note output line selected is named 000 or 010 or 111 etc. Output value of only one of lines would be 1. These 000, 010 denotes the label and imply that if you have these I0 I1 I2 input values labelled line would be activated for the output. Enable line is a good resource for joining two 3×8 decoders to make one 4×16 decoder.


Related Discussions:- What do you mean by decoders

Superscalar processors, Superscalar Processors In scalar processors, on...

Superscalar Processors In scalar processors, only one instruction is implemented per cycle. That means only single instruction is issued per cycle and only single instruction i

Applications of linked list, What are the Applications of Linked List are ...

What are the Applications of Linked List are a) Fixed block storage allocation b) garbage collection

Explain open-systems interconnections architecture model, Q. Explain Open-s...

Q. Explain Open-systems interconnections architecture model The most common network architecture model is the open-systems interconnections (OSI). Figure shows the ISO (Intern

What is called when distortion caused on telephone line, Distortion caused ...

Distortion caused on telephone line by an adjacent one is called (A) Cross Fire                      (B) Inductive Disturbance (C)  Cross Talk                     (D) Non

What is performance testing in loadrunner, Timing for both read and update ...

Timing for both read and update transactions should be gathered to verify whether system functions are being performed in an acceptable timeframe. This should be done standalone an

Explain message switching, Explain Message switching. Recourse computer...

Explain Message switching. Recourse computer sends data to switching office that stores the data into buffer and seems for a free link. Sends link to other switching office, if

What is bus arbitration, What is bus arbitration? It is method by which...

What is bus arbitration? It is method by which the next device to become the bus master is selected and bus mastership is transferred to it. There are two ways for doing this:

Utility functions - artificial intelligence, Utility Functions - artificial...

Utility Functions - artificial intelligence: A goal based on an agent for playing chess is infeasible: at every moment it decides which move to play next, it sees whether that

What is message passing libraries, Q. What is Message Passing Libraries? ...

Q. What is Message Passing Libraries? In this part we will consider about message passing libraries. Traditionally a range of message passing libraries have been available ever

Bit serial associative processor (bsap), Bit Serial Associative Processor (...

Bit Serial Associative Processor (BSAP) : When the associative processor accepts bit serial memory organization then it is known as bit serial associative processor. While only one

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