Industrial Digital Systems

This paper discusses some of the basic reasons why digital equipment, rather than analog equipment, is preferable for logging and control systems. Characteristics of system components such as input multiplexer and digitizer, digital computer, and output devices are discussed as parts of an integrated, flexible, and reliable industrial data handling and control system. In discussing the functional role played by each of the above system components, broad design criteria are developed for their construction, and operation is demonstrated when controlled by a general-purpose digital computer.