This article discusses about what is encoder and encoder, working and its applications. Definition of Encoder It is a combinational circuit that is used to convert the input signal in the form of coded output digital data stream. While they both are the basic concepts of digital circuits, they are very different from each other. Information, before transmitting or storing, might be encrypted using an encoder, making the information inaccessible without proper decoding process; hence making information secure. We can give at a time two or more than two inputs, then the highest priority takes precedence. Encoder vs Decoder In modern technological environment, transmitting, storing, and interpreting information plays a key role in the operation of all the electronic based systems, whether it is a digital device or an analog device or a computer system or a software system. Priority Encoder The example of the priority encoder is 4 to 2 encoder and the priority encoders are connected to the arrays to make large encoders.
It forwards the input data to one of the output lines, depending on the values of the input. Decoders are used in a variety of applications such as wireless communication, seven segment displays, data demultiplexing, memory address decoding, and more. As against decoder accepts coded binary data as its input. The four enable pins are connected together and if the enable pin is zero, then all the outputs are zero. These components are used in Mechatronics and robotics for acquiring positional information of the components. The inputs of a binary code can be 2-bit, 3-bit, or 4-bit codes, depending on the number of input lines. This type of combined system is useful in several different situations.
Additionally, there are select lines present in demultiplexers, whereas there are no select lines in decoders. The feedback signal of the encoder will determine the position, count, speed, and direction. They are types of combinational logic circuits. Demultiplexers are used to implement general purpose logic. Linear transducers also perform the same type of function but on a linear scale.
The large encoders in the priority encoders are 16 to 4 encoders, these are made with the six 4 to 2 encoders — for 4 to 2 encoders with the single source connected to their inputs and remaining two encoders takes the output of the first four as input. In electronics terminology, a decoder is a combinational logic circuit that transforms a code into a set of signals. Frequently there is a use of control interrupt request by acting the highest priority encoder. These are used in different applications like seven segment display, memory address decoding. The function of the binary decoder is obtained if the given input combination has occurred. The table shows illustration of the decoding and also a logic symbol of 3 to 8 decoders.
Outside his professional life, Sagar loves to connect with people from different cultures and origin. In web technologies also encoders are used to improve security standards. Multiplexer and encoder both are very important for the digital electronics. Binary Decoder 3 to 8 Decoder This type of decoder is called as the 3 line to 8 line decoder because they have 3 inputs and 8 outputs. Rotary encoders are used to convert the angular position of a moving component e. A multiplexer is also known as a data selector, it consists of a group of data inputs and a group of control inputs.
In electronic circuits, encoders are used to compress digital multiple binary inputs into a smaller number of outputs. A decoder converts n bit coded data inputs into 2 n output lines. As the name suggests, it does exactly the opposite of what a digital multiplexer does, which on the contrary takes n input lines and routes it to one output line. What is Encoder and Decoder? But how does the encoder actually work? Resultantly, which provide no result at the output. If not write a comment I will edit this answer and explain in detail. User assumes all risk of use, damage, or injury.
For example, when stereo audio is to be added to a video file, it needs to be multiplexed or muxed with the left and right audio channels. When a bit comes in on an input wire, the encoder outputs the physical address of that wire. A decoder is a component which reveres the process; that is, convert the information back to the previous or original form. It is used to convert the data from one form to another form. So the input code generally has fewer bits than the bits in the output code. If the enable pin is zero then the output pins are logic 0. .
It has no selection lines. They are practically used in many applications such as data demultiplexing, memory address decoding, etc. This we can see in the truth table shown above. Let us try to understand the Terminology of Multiplexer, Demultiplexer, Encoder and Decoder. A decoder can be described as a logic circuit with many inputs and many outputs, whereas a demultiplexer is a combination circuit that has one input and several outputs.