The Computer in the 21st Century

The Computer in the 21st Century

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Furthermore, engineers building each new generation of technology appear to make the same mistakes as their predecessors. ... Consider, for example, the running war between ATaamp;T and the phone phreaks. ... as aquot;Captain Crunchaquot; for his discovery that a modified cereal-box whistle could make the 2, 600-hertz tone required to unlock a trunk line. ... of a sequence of digits (usually area code, number and billing office code) followed by a aquot;check digitaquot; that depended on the other digits.

Title:The Computer in the 21st Century
Publisher: - 1995

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