Scrabble?! INCREMENTA

Definitions of INCREMENTA in various dictionaries:

An incremental encoder is a linear or rotary electromechanical device that has two output signals, A and B, which issue pulses when the device is moved. Many incremental encoders have an additional output signal, typically designated index or Z, which indicates the encoder is located at a particular reference position. Also, some encoders provide a status output (typically designated "alarm") that indicates internal fault conditions such as a bearing failure or sensor malfunction. An incremental encoder does not indicate absolute position; it only reports incremental changes in position. Consequently, to determine absolute position at any particular moment, it is necessary to send the encoder signals to an incremental encoder interface, which in turn will "track" and report the encoder's absolute position. Incremental encoders report position changes without being prompted to do so, and they convey this information at data rates which are orders of magnitude faster than those of most types of absolute encoders. The resulting, very low data latency of an incremental encoder allows it to be used to monitor the position of a high speed mechanism in real time -- a capability lacking in most types of absolute encoders. Because of this, incremental encoders are commonly used in applications that require precise measurement of position and velocity.