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UNUSUAL APPLICATIONS A Real Time Data Assimilator HANS W. GSCHWIND,Holloman Air Force Base, New Mexico INPUT-~ OUTPUT REGISTER , CONTROL ARITHMETIC AND Introduction MEMORY In spite of their high speed, modern general purpose digital computers are not suited for elaborate real time calculations. This is mainly due to the lack of adequate input-output facilities, i.e., input-output facilities which are fast, flexible, capable of handling a vast amount of various data and which do not need the c o m p u t e r - - a n d more important--;computing time for their control. For t h e following considerations, the process of data input and output will be called "Data Assimilation" and consequently, those parts of the overall computing system taking care of this process, "Data Assimilator." The Problem of Data Assimilation FIG. 1. Data assimilation by conventional computer ~] MEMORY ~ [ CONTROL AND ARITHMETIC FIG. 2. Mechanized data assimilation time a sample arrives. I t has to read the information, identify the source and time, and store the sample in the memory and resume operation. In this mode of operation, it takes approximately 500 microseconds to accept one sample. In other words one computer
Communications of the ACM – Association for Computing Machinery
Published: Jul 1, 1959
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