Disney

Founded in 1929 Disney primarily engages in child and adult entertainment. Starting with the production of animated motion-picture cartoons in the late 1940s Disney began to make also nature documentaries and live-action motion pictures, as well as short cartoons and live-action programs for television. In 1955 the company opened Disneyland, which was their first amusement park. Further openings of amusement parks in the U.S. and Europe followed. In 1996 Disney acquired Capital Cities/ABC Inc., which owned the ABC television network.

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0 - 1400 A.D.

150
A smoke signals network covers the Roman Empire

The Roman smoke signals network consisted of towers within a visible range of each other and had a total length of about 4500 kilometers. It was used for military signaling.
For a similar telegraph network in ancient Greece see Aeneas Tacitus' optical communication system.

About 750
In Japan block printing is used for the first time.

868
In China the world's first dated book, the Diamond Sutra, is printed.

1041-1048
In China moveable types made from clay are invented.

1088
First European medieval university is established in Bologna.

The first of the great medieval universities was established in Bologna. At the beginning universities predominantly offered a kind of do-it-yourself publishing service.

Books still had to be copied by hand and were so rare that a copy of a widely desired book qualified for being invited to a university. Holding a lecture equaled to reading a book aloud, like a priest read from the Bible during services. Attending a lecture equaled to copy a lecture word by word, so that you had your own copy of a book, thus enabling you to hold a lecture, too.

For further details see History of the Idea of a University, http://quarles.unbc.edu/ideas/net/history/history.html

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More and more, faster and faster, but...

Since the invention of appropriate means and technologies, communication no longer requires face-to-face meetings.

From writing and reading to using computers, expanding and exhausting one's possibilities to communicate relies more and more on the application of skills we have to learn. With the increasing importance of communication technologies, learning to apply them properly becomes a kind of rite of passage.

A Small World

From the very beginning - the first Sumerian pictographs on clay tablets - to today's state of the art technologies - broadband communication via fiber-optic cables and satellites - the amount of information collected, processed and stored, the capabilities to do so, as well as the possible speed of information transmission exponentially accelerate.

Since the invention of the electrical telegraph, but especially with today's growing digital communication networks, every location on earth seems to be close, however distant it may be, and also time no longer remains a significant dimension.

Threatened Cultural Memory

More and more information is transmitted and produced faster and faster, but the shelf life of information becomes more and more fragile. For more than 4500 years Sumerian pictographs written on clay tablets remained intact, but newspapers and books, printed some decades ago, crumble into pieces; film reels, video tapes and cassettes corrode. Digitalization of information is not a cure; on the contrary it even intensifies the danger of destroying cultural heritage. Data increasingly requires specific software and hardware, but to regularly convert all available digitized information is an unexecutable task.

Compared to the longevity of pictographs on clay tablets, digitized information is produced for instant one-time use. The increasing production and processing of information causes a problem hitherto unknown: the loss of our cultural memory.

For further information see T. Matthew Ciolek, Global Networking Timeline.

For another history of communication systems see Friedrich Kittler, The History of Communication Media.

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Hieroglyphs

Hieroglyphs are pictures, used for writing in ancient Egypt. First of all those pictures were used for the names of kings, later more and more signs were added, until a number of 750 pictures

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blowfish encryption algorithm

Blowfish is a symmetric key block cipher that can vary its length.
The idea behind is a simple design to make the system faster than others.

http://www.counterpane.com/blowfish.html
http://www.counterpane.com/bfsverlag.html

http://www.counterpane.com/blowfish.html
http://www.counterpane.com/blowfish.html
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IDEA

IDEA is another symmetric-key system. It is a block cipher, operating on 64-bit plaintext blocks, having a key-length of 128 bits.

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