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This article is about what the logic function of the encoder is in the computer network. The editor thinks it is very practical, so share it with you as a reference and follow the editor to have a look.

The logical function of the encoder is to convert a certain state into the corresponding binary code. The logic function of the decoder is to convert a certain binary code into a certain output state.

Encoder (encoder)

An encoder (encoder) is a device that compiles and converts a signal (such as a bit stream) or data into a signal form that can be communicated, transmitted, and stored. The encoder converts angular displacement or linear displacement into electrical signals, the former is called code disk, and the latter is called code ruler.

According to the readout mode, the encoder can be divided into contact type and non-contact type; according to the working principle, the encoder can be divided into two types: incremental type and absolute type.

The incremental encoder converts the displacement into a periodic electrical signal, and then converts the electrical signal into a counting pulse, and the displacement is represented by the number of pulses. Each position of the absolute encoder corresponds to a definite digital code, so its indication is only related to the start and end positions of the measurement, and has nothing to do with the intermediate process of the measurement.

Decoder (decoder)

Decoder (decoder) is a kind of multi-input and multi-output combinational logic circuit devices, which can be divided into two categories: variable decoding and display decoding. Variable decoder is generally a device that changes from less input to more output, there are two common types: n-line-2 ^ n-line decoding and 8421BCD code decoding; display decoders are used to convert binary numbers into corresponding seven-segment codes, which can be divided into two categories: driving LED and driving LCD.

Decoding is the inverse process of coding, in coding, each kind of binary code is endowed with a specific meaning, that is, it represents a definite signal or object. The process of "translating" the specific meaning of the code state is called decoding, and the circuit that implements the decoding operation is called the decoder. In other words, a decoder is a circuit that can translate the state of an input binary code into an output signal to express its original meaning.

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