An encoder is a device used to change a signal (such as a bitstream) or data into a code. The code may serve any of a number of purposes such as compressing information for transmission or storage, encrypting or adding redundancies to the input code. translating from one code to another. This is usually done by means of a programmed algorithm, especially if any part is digital, while most analogue encoding is done with analog circuitry.
Examples:
- a rotary encoder is a sensor or transducer for converting rotary motion or position to a code of electronic pulses.
- a multiplexer combines multiple inputs into one output.
- a Compressor is used to encode data into a smaller form.
See also
External links
- asic-world's Digital Combinational Logic (part III) - a very good overview of encoders.