The History of Digital Computing
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If you've ever had trouble remembering a four digit code then this free online memory tool is for you. Whether it's the security access code for your work, a PIN for your ATM, your library password, then the mnemonic generator can help.Harriot biography
Thomas Harriot was a mathematician and astronomer who founded the English school of algebra. He is described in [ 10 ] by Fauvel and Goulding as:- We know very little of Harriot's youth.
Product Description Leonhard Euler’s polyhedron formula describes the structure of many objects–from soccer balls and gemstones to Buckminster Fuller’s buildings and giant all-carbon molecules. Yet Euler’s formula is so simple it can be explained to a child.
Gottfried Wilhelm Leibniz Archives - Free access to documentatio
The I Ching has been used for more than 5000 years as an aid to making decisions, predicting the future, etc. So, if nothing else, it is a long-standing and popular source of wisdom and inspiration. Our descriptions are based on the output of the Unix ching(6) program. There are a number of books on the I Ching. Wu Wei, in particular, has published several with Power Press .
I Ching
In Gottfried Leibniz's article Explication de l'Arithmétique Binaire (1703) he writes that he has found in the hexagrams a base for claiming the universality of the binary numeral system. He takes the layout of the combinatorial exercise found in the hexagrams to represent binary sequences, so that ¦¦¦¦¦¦ would correspond to the binary sequence 000000 and ¦¦¦¦¦| would be 000001, and so forth. (taken from Wikipedia Book of Changes page) by Mar 24
The I Ching ( Classic of Changes or Book of Changes ), also known as the Yi Jing , Yijing , or I Ging , is one of the Five Classics , the fundamental books of Confucianism. It is over 3000 years old (the symbols used in divination are over 5000 years old), making it both one of the oldest surviving books in the world, and one of the oldest forms of divination. It is by far the most popular spiritual resource and oracle in Asia, and has a growing following in Europe and the Americas based on its uncanny ability to provide detailed insights to those who study it carefully. For more information, read our Introduction to I Ching Readings .
FREE I Ching Readings
There is a natural correspondence between a computer language and a machine (that carries out the instructions of the language). At the lowest level we find digital logic components that control electronic circuits in response to simple machine instructions. Each higher level is built on the preceeding one and provides more abstract instructions that are translated to the lower level to be executed. Each higher level is a virtual machine, related to the language describing its capabilities. There is a technical level below the digital logic level where the logical properties are implemented by a collection of interconnected devices.
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BinarySystem
Main Index Number Theory Arithmetics Numeral systems Positional numeral systems Subject Index
Binary -- from Wolfram MathWorld
The base 2 method of counting in which only the digits 0 and 1 are used. In this base , the number 1011 equals . This base is used in computers, since all numbers can be simply represented as a string of electrically pulsed ons and offs. In computer parlance, one binary digit is called a bit , two digits are called a crumb , four digits are called a nibble , and eight digits are called a byte .Fractals: Peano Curves
Born: 27 Aug 1858 in Cuneo, Piemonte, Italy Died: 20 April 1932 in Turin, Italy Giuseppe Peano was born in a farmhouse about 5 km from Cuneo.
Peano was an Italien astronomer and mathmetician who transformed mathematics into short text based on special symbols. by Mar 25
The ENIAC Museum Online
Originally announced on February 14, 1946, the Electronic Numerical Integrator and Computer (ENIAC), was the first general-purpose electronic computer. Hailed by The New York Times as "an amazing machine which applies electronic speeds for the first time to mathematical tasks hitherto too difficult and cumbersome for solution," the ENIAC was a revolutionary piece of machinery in its day. It was constructed and operated here at The Moore School of Electrical Engineering, now part of the School of Engineering and Applied Science. Today, it is difficult to imagine how we could manage without the myriad electronic devices that we utilize each day. From our "smart" phones, touch screens, and tiny cameras to our automobiles, airplanes and medical equipment and devices, electronics is the engine driving us forward. And it was here at the University of Pennsylvania that it all began.
Pasadena, Calif., July 14 -- Mariner 4 completed its rendezvous with Mars this evening and sailed on into space carrying it is hoped, a series of tape-recorded pictures of that mysterious planet. Instruments aboard the spacecraft indicated that Mars has no significant magnetic field and no appreciable radiation belts. Its lack of a magnetic umbrella has a direct bearing on its habitability. Life on earth is protected by the shield of this planet's magnetism, which diverts incoming radiation from the sun and exploding stars--radiation that might otherwise be lethal. Mariner 4 went through its complex preparatory procedures today without any apparent mishap. However, during the picture-taking sequence there were hints, in radio data from the spacecraft, that the control system of its tape recorder was not functioning properly.
Mariner 4 Makes Flight Past Mars
An Atlas of Cyberspaces- Historical Maps
By the end of the year there are four nodes on the "ARPA NETWORK", as shown in schematic above. These were University of California Los Angeles (UCLA), University of California Santa Barbara (UCSB), University of Utah and the Stanford Research Institute (SRI). ARPANET grew rapidly as more sites are connected.The NEW XANADU STRUCTURE FOR THE WEB
The Xanadu model has always been very simple: make content available with certain permissions; then distribute and maintain documents simply as lists of these contents, to be filled in by the browser (in the same way that browsers now fill in GIFs). Since the advent of the Web, our last several years have been concerned with figuring out how to move these concep ts to the very different standards environment that the Web has imposed. One new design, underway in collaboration with David Durand, is now being written up by him. It is unrelated to the previous Xanadu code .Invented the term hypertext for his Xanadu project. by Mar 24
As Director of the Office of Scientific Research and Development, Dr. Vannevar Bush has coordinated the activities of some six thousand leading American scientists in the application of science to warfare. In this significant article he holds up an incentive for scientists when the fighting has ceased. He urges that men of science should then turn to the massive task of making more accessible our bewildering store of knowledge. For years inventions have extended man's physical powers rather than the powers of his mind.
As We May Think - Magazine - The Atlantic
[ edit ] Overview The main concepts of information theory can be grasped by considering the most widespread means of human communication: language. Two important aspects of a concise language are as follows: First, the most common words (e.g., "a", "the", "I") should be shorter than less common words (e.g., "benefit", "generation", "mediocre"), so that sentences will not be too long. Such a tradeoff in word length is analogous to data compression and is the essential aspect of source coding . Second, if part of a sentence is unheard or misheard due to noise — e.g., a passing car — the listener should still be able to glean the meaning of the underlying message. Such robustness is as essential for an electronic communication system as it is for a language; properly building such robustness into communications is done by channel coding .
Information theory - Wikipedia, the free encyclopedia
Codognet states, "Information theory can be thought of as a sort of simplified or idealized semiotics: a ciphering/deciphering algorithm represents the interpretation process used to decode some signifier (encoded information) into some computable signified (meaningful information) to be fed to a subsequent processing step. This process, like semiosis itself, is, of course unlimted." by Mar 24