The advertising industry is dominated by three huge advertising networks, which offer their services throughout the world. Gross income of the three leading agencies is twice as much, as the one of places four to ten.
Table: World's Top 10 Advertising Organizations 1999
(figures in millions of U.S. dollars)
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Table: Top 10 Global Marketers 1998
(figures in millions of U.S. dollars)
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On the other hand the three biggest advertisers only spend about US$ 2 millions less than places four to ten together. Whereas money spent on advertising in traditional media comes from very diverse categories, companies offering computer hard- and software, peripherals or Internet services mainly pay for on-line advertisements.
Table: Top 10 Internet Advertisers 1998
(figures in millions of U.S. dollars)
|
Source: Advertising Age
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17th century Cardinal Richelieu invents an encryption-tool called grille, a card with holes for writing messages on paper into the holes of those cards. Afterwards he removes the cards and fills in the blanks, so the message looks like an ordinary letter. The recipient needs to own the same card
- Bishop John Wilkins invents a cryptologic system looking like music notes. In a book he describes several forms of steganographic systems like secrets inks, but also the string cipher. He mentions the so-called Pig Latin, a spoken way of encryption that was already used by the ancient Indians
- the English scientist, magician and astrologer
1605/1623 Sir Francis Bacon (= Francis Tudor = William Shakespeare?) writes several works containing ideas about cryptography. One of his most important advises is to use ciphers in such a way that no-one gets suspicious that the text could be enciphered. For this the steganogram was the best method, very often used in poems. The attempt to decipher Shakespeare's sonnets (in the 20th century) lead to the idea that his works had been written by Francis Bacon originally.
1671 Leibniz invents a calculating machine that uses the binary scale which we still use today, more advanced of course, called the ASCII code
18th century this is the time of the Black Chambers of espionage in Europe, Vienna having one of the most effective ones, called the "Geheime Kabinettskanzlei", headed by Baron Ignaz von Koch. Its task is to read through international diplomatic mail, copy letters and return them to the post-office the same morning. Supposedly about 100 letters are dealt with each day.
1790's Thomas Jefferson and Robert Patterson invent a wheel cipher
1799 the Rosetta Stone is found and makes it possible to decipher the Egyptian Hieroglyphs
1832 or 1838 Sam Morse develops the Morse Code, which actually is no code but an enciphered alphabet of short and long sounds. The first Morse code-message is sent by telegraph in 1844.
1834 the
1844 the invention of the telegraph changes cryptography very much, as codes are absolutely necessary by then
1854 the Playfair cipher is invented by Sir Charles Wheatstone
1859 for the first time a tomographic cipher gets described
1861 Friedrich W. Kasiski does a cryptoanalysis of the Vigenère ciphers, which had been supposed to be uncrackable for ages
1891 Major Etienne Bazeries creates a new version of the wheel cipher, which is rejected by the French Army
1895 the invention of the radio changes cryptography-tasks again and makes them even more important
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The Roman smoke signals network consisted of towers within 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
Agostino Ramelli designed a "reading wheel" which allowed browsing through a large number of documents without moving from one spot.
Presenting a large number of books, a small library, laid open on lecterns on a kind of ferry-wheel, allowing us to skip chapters and to browse through pages by turning the wheel to bring lectern after lectern before our eyes, thus linking ideas and texts together, Ramelli's reading wheel reminds of today's browsing software used to navigate the