Abstract
This chapter provides an overview of data-reduction systems. It describes the difference between data-handling systems and data-reduction systems. A data-handling system incorporates the idea of complete sensing and transfer of data from its source through some sort of a coding and transporting effort to the final processing and computing effort. There are three areas of interest in this system: (1) an acquisition area, (2) a processing area, and (3) a computation area. The processing and computation efforts together are defined as data reduction, while the three blocks together are defined as data handling. Data acquisition means collection of equipment necessary to sense the data and transform it into a coded signal suitable for recording, together with the actual equipment required for recording the information.
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