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Turing's Influence on Computer Construction is Overestimated
From BLOG@CACM

Turing's Influence on Computer Construction is Overestimated

How great was Turing's influence on early British automatic computers? Opinions differ considerably.

Forced Labor at Bührle's Arms Factory
From BLOG@CACM

Forced Labor at Bührle's Arms Factory

As has only recently become known, forced labor occurred at a former Bührle textile factory in Toggenburg, Switzerland. This and other Bührle companies played a...

The Mesm: Ukraine Beats Russia
From BLOG@CACM

The Mesm: Ukraine Beats Russia

The Mesm is considered the first stored program digital computer in Continental Europe.

Leonardo Torres Quevedo, a Brilliant but Forgotten Spanish Inventor
From BLOG@CACM

Leonardo Torres Quevedo, a Brilliant but Forgotten Spanish Inventor

Although far ahead of his time, in the German- and English-speaking countries, Torres Quevedo has been largely forgotten.

Promoting Economic Development through Technical Innovation
From BLOG@CACM

Promoting Economic Development through Technical Innovation

A wealth of information about the history of technology and industry.

The Calculating Machine from the Concentration Camp
From BLOG@CACM

The Calculating Machine from the Concentration Camp

The story of Viennese engineer Curt Herzstark and the world's smallest mechanical calculating machine, the Curta.

Original Roman Pocket Calculators are Extremely Rare
From BLOG@CACM

Original Roman Pocket Calculators are Extremely Rare

As far as we know, only three or four original specimens of the Roman hand abacus have survived.

Patent Protection in Europe
From BLOG@CACM

Patent Protection in Europe

Up to the second half of the 19th century —with the exception of the industrial power Great Britain—the protection of inventions was inadequate and strongly disputed...

Computers Were Originally Humans
From BLOG@CACM

Computers Were Originally Humans

Until the middle of the 20th century, computers were in fact humans who performed calculations.

How Does One Multiply with Napier's Rods?
From BLOG@CACM

How Does One Multiply with Napier's Rods?

Napier's multiplication and division rods, deriving from the basic multiplication table, simplify calculations considerably.

How Does One Calculate With A Circular Slide Rule?
From BLOG@CACM

How Does One Calculate With A Circular Slide Rule?

The circular slide rule was widely used until the 1970s.

The Evolution of Computing Power in Switzerland
From BLOG@CACM

The Evolution of Computing Power in Switzerland

Milestones in the history of computing from the Swiss National Supercomputing Center, Lugano.  

Soresini: A Very Rare Book on the History of Computing
From BLOG@CACM

Soresini: A Very Rare Book on the History of Computing

The work is an extremely instructive, rich history of calculating technology. It also includes the analog world and automata, and is written in Italian.

Charles Babbage and the Loom
From BLOG@CACM

Charles Babbage and the Loom

Babbage wanted to control his analytical engine, regarded as the ancestor of the modern-day computer, with punched cards.

The World's Most Magnificent Historical Calculating Machines
From BLOG@CACM

The World's Most Magnificent Historical Calculating Machines

The design of today's electronic computers is usually not very appealing, in contrast to magnificent mechanical calculating machines from earlier times.

When Did the Digital Age Begin?
From BLOG@CACM

When Did the Digital Age Begin?

There is no clear answer.

Superb Historical Robots
From BLOG@CACM

Superb Historical Robots

The world's most magnificent historical robots.

Konrad Zuse's Guestbook: a Treasure Trove
From BLOG@CACM

Konrad Zuse's Guestbook: a Treasure Trove

Computer scientist Konrad Zuse created the world's first programmable computer, the functional program-controlled Turing-complete Z3.

An Enigmatic Device from Denmark
From BLOG@CACM

An Enigmatic Device from Denmark

Discovery of a very rare surveying instrument in Denmark.

How Do You Calculate on the Abacus?
From BLOG@CACM

How Do You Calculate on the Abacus?

Considering the use of one of the most long-lived calculating devices.
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