The invention relates to a stand-alone video recording, playback and Monitoring system. The tool provides a downhole tool capable of drilling horizontally into a formation and further capable of operating in a relatively small well bore, such as those having a diameter of less than six inches. The hashing circuitry identifies multiple locations in one or more history buffers for searching for a target data in the input data stream. The composition may be provided in the form of pellets in a capsule or Peltabs.