Late 1960s - Early 1970s: Third Generation Computers One of the most important advances in the development of computer hardware in the late 1960s and early 1970s was the invention of the integrated circuit, a solid-state device containing hundreds of transistors, diodes, and resistors on a tiny silicon chip. It made possible the production of large-scale computers (mainframes) of higher operating speeds, capacity, and reliability at significantly lower costs. Another type of computer developed at the time was the minicomputer. It profited from the progresses in microelectronics and was considerably smaller than the standard mainframe, but, for instance, powerful enough to control the instruments of an entire scientific laboratory. Furthermore operating systems, that allowed machines to run many different programs at once with a central program that monitored and coordinated the computer's memory, attained widespread use.

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Economic structure; digital euphoria The dream of a conflict-free capitalism appeals to a diverse audience. No politician can win elections without eulogising the benefits of the information society and promising universal wealth through informatisation. "Europe must not lose track and should be able to make the step into the new knowledge and information society in the 21st century", said Tony Blair. The US government has declared the construction of a fast information infrastructure network the centerpiece of its economic policies In Lisbon the EU heads of state agreed to accelerate the informatisation of the European economies The German Chancellor Schröder has requested the industry to create 20,000 new informatics jobs. The World Bank understands information as the principal tool for third world development Electronic classrooms and on-line learning schemes are seen as the ultimate advance in education by politicians and industry leaders alike. But in the informatised economies, traditional exploitative practices are obscured by the glamour of new technologies. And the nearly universal acceptance of the ICT message has prepared the ground for a revival of 19th century "adapt-or-perish" ideology. "There is nothing more relentlessly ideological than the apparently anti-ideological rhetoric of information technology" (Arthur and Marilouise Kroker, media theorists)

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David Kahn David Kahn can be considered one of the most important historians on cryptography. His book The Codebreakers. The comprehensive history of secret Communication from Ancient Times to the Internet, written in 1996 is supposed to be the most important work on the history of cryptography.

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Ross Perot Ross Perot, founder of EDS, is one of the richtest individuals of the US, and former presidential candidate of the Reform Party. A staunch patriot, Perot has been know for his aggressive business practices as well as for his close relationships to the military and other US governmental bodies. Perot reached 19 % in the 1992 presidential elections, but dropped to less than 10 % in 1996. Official website: http://www.perot.org/ Unofficial website: http://www.realchange.org/perot.htm http://www.eds.com/ http://www.perot.org/ http://www.realchange.org/perot.htm

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Polybius Checkerboard   1 2 3 4 5 1 A B C D E 2 F G H I K 3 L M N O P 4 Q R S T U 5 V W X Y Z It is a system, where letters get converted into numeric characters. The numbers were not written down and sent but signaled with torches. for example: A=1-1 B=1-2 C=1-3 W=5-2 for more information see: http://www.ftech.net/~monark/crypto/crypt/polybius.htm http://www.ftech.net/~monark/crypto/crypt/pol...

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Fair use Certain acts normally restricted by copyright may, in circumstances specified in the law, be done without the authorization of the copyright owner. Fair use may therefore be described as the privilege to use copyrighted material in a reasonable manner without the owner's consent and allows the reproduction and use of a work for limited purposes such as criticism, comment, news reporting, teaching, and research. To determine whether a use is fair or not most copyright laws consider: 1) purpose and character of the use, 2) nature of the copyrighted work, 3) amount and substantiality of the portion used, and 4) effect of the use on the potential market. Examples of activities that may be excused as fair use include: providing a quotation in a book review; distributing copies of a section of an article in class for educational purposes; and imitating a work for the purpose of parody or social commentary.

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