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information theory

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Richard Hamming and the Hamming Code

Richard Hamming and the Hamming Code

Harald Sack
On February 11, 1915, American mathematician Richard Wesley Hamming was born. Hamming’s work had many implications for computer science and telecommunications. His contributions include the Hamming code (which makes use of a Hamming matrix), the Hamming window, Hamming numbers, sphere-packing (or Hamming bound), and the Hamming distance. “The purpose of computation is insight, not numbers.” – Richard Wesley Hamming (1962) as quoted in [2] Richard Hamming – Youth and Education Richard Wesley…
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history
The Universal Product Code (UPC)

The Universal Product Code (UPC)

Harald Sack
On June 26, 1974, the Universal Product Code barcode was introduced to the public. A supermarket in Troy, Ohio scanned the first product, which was a pack of Wrigley‘s gum. The first impulse to creating barcodes was made by Bernard Silver and Norman Joseph Woodland. A food chain store owner turned to the Drexel Institute of Technology, which the two graduate students were attending. He asked for a system to automatically read…
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computer science
Claude Shannon – the Father of Information Theory

Claude Shannon – the Father of Information Theory

Harald Sack
On April 30, 1916, American mathematician, electrical engineer, and cryptographer Claude Elwood Shannon was born, the “father of information theory“, whose groundbreaking work ushered in the Digital Revolution. Of course Shannon is famous for having founded information theory with one landmark paper published in 1948. But he is also credited with founding both digital computer and digital circuit design theory in 1937, when, as a 21-year-old master’s student at MIT, he wrote a thesis…
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computer science

Rolf Landauer and the Landauer Principle

Harald Sack
On February 4, 1927, German-American physicist Rolf William Landauer was born. Landauer made important contributions in diverse areas of the thermodynamics of information processing, condensed matter physics, and the conductivity of disordered media. He is probably best known for the formulation of the eponymous Landauer Principle concerning the energy used during a computer‘s operation. “We shall call a device logically irreversible if the output of a device does not uniquely define the…
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