meal, repast(noun) the food served and eaten at one time. meal(noun) any of the occasions for eating food that occur by custom or habit at more or less fixed times. meal(noun) coarsely ground foodstuff; especially seeds of various cereal grasses or pulse.
An encoder is a sensor of mechanical motion that generates digital signals in response to motion. As an electro-mechanical device, an encoder is able to provide motion control system users with information concerning position, velocity and direction. There are two different types of encoders: linear and rotary.
Encoder and decoder function. There are lots of encoders/decoders. A typical encoder takes a signal that is 1 out of N, encodes and it into a smaller number of lines. A corresponding decoder takes those encoded value, and restores the 1 of N value. For example, here is a 1 of 9 decoder, which encodes the input into a 4-bit BCD value.