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Encyclopedia of Computer Science and Technology
Volume 14 - Very Large Data Base Systems to Zero-Memory and Markov Information Source
Jack Belzer, Albert G. Holzman, Allen Kent
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eBook - ePub
Encyclopedia of Computer Science and Technology
Volume 14 - Very Large Data Base Systems to Zero-Memory and Markov Information Source
Jack Belzer, Albert G. Holzman, Allen Kent
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About This Book
"This comprehensive reference work provides immediate, fingertip access to state-of-the-art technology in nearly 700 self-contained articles written by over 900 international authorities. Each article in the Encyclopedia features current developments and trends in computers, software, vendors, and applications...extensive bibliographies of leading figures in the field, such as Samuel Alexander, John von Neumann, and Norbert Wiener...and in-depth analysis of future directions."
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ZERO-MEMORY AND MARKOV INFORMATION SOURCE
see also Codes and Coding, Information Theory
ZERO-MEMORY SOURCE
A zero-memory system is one that can receive pulses as stimuli and respond to them in a well-defined manner. The response, however, must be immediate and no delay is possible. A delay would in effect constitute remembering which impulse came in, even if for a brief period of time, thereby implying memory. Unit record machines such as sorters, reproducers, and printers are such systems. In a sorter the machine reading a punched card senses a hole in that card, which is represented by an electrical impulse. This electrical impulse triggers an opening to a pocket into which that card eventually drops. That impu...