What is encoder?
--The encoder is a device or a transducer or a circuit.The encoder will convert the information from one format to another format i.e like electrical signals to counters or a PLC. The feedback signal of the encoder will determine the position, count, speed, and direction. The control devices are used to send the command to a particular function.
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Why are we using encoder?
Because
--All processes are made according to 2 number system (binary) in digital systems.So these operations are converted to binary number systems by encoders.Otherwise these processes will not be processed in digital systems.
Where are we using encoders?
Generally, these are frequently used in the communication systems like telecommunication, networking, and transfer the data from one end to the other end. In the same way it is also used in the digital domain for easy transmission of data, placed with the codes and then transmitted.
Priority Encoder
The priority encoder is a circuit it compresses the multiple binary input to the small number of outputs. The output of priority encoder is in the binary representation of the original number of most significant bits. Frequently there is a use of control interrupt request by acting the highest priority encoder. We can give at a time two or more than two inputs, then the highest priority takes precedence.
The 74LS147 can be supplied as an example of an integrated circuit for the encoder.
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