The Computer and the Brain by John von Neumann
Author:John von Neumann
Language: eng
Format: epub
Publisher: Yale University Press
Published: 2012-07-14T16:00:00+00:00
Modus Operandi of the Memory-Stored Control
In this case, since the orders that exercise the entire control are in the memory, a higher degree of flexibility is achieved than in any previous mode of control. Indeed, the machine, under the control of its orders, can extract numbers (or orders) from the memory, process them (as numbers!), and return them to the memory (to the same or to other locations); i.e. it can change the contents of the memory—indeed this is its normal modus operandi. Hence it can, in particular, change the orders (since these are in the memory!)—the very orders that control its actions. Thus all sorts of sophisticated order-systems become possible, which keep successively modifying themselves and hence also the computational processes that are likewise under their control. In this way more complex processes than mere iterations become possible. Although all of this may sound farfetched and complicated, such methods are widely used and very important in recent machine-computing—or, rather, computation-planning—practice.
Of course, the order-system—this means the problem to be solved, the intention of the user—is communicated to the machine by “loading” it into the memory. This is usually done from a previously prepared tape or some other similar medium.
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Computer Vision & Pattern Recognition | Expert Systems |
Intelligence & Semantics | Machine Theory |
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