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Numbers don't mean anything if people don't understand, or trust, the computation behind them.

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

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

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

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

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.

From BLOG@CACM
#### The World's Most Magnificent Historical Automatons

Automatons are ubiquitous. Some of the most magnificent works in the genre have survived in museums.

From BLOG@CACM
#### An Enigmatic Device from Denmark

Discovery of a very rare surveying instrument in Denmark.

From BLOG@CACM
#### Tracking Down a Seminal Work on Computer Construction – in Russian

A Russian edition of Rutishauser's standard work on computer construction.

From BLOG@CACM
#### Discovery: User Manual of the Oldest Surviving Computer in the World

A rare find: the user manual of the oldest surviving computer in the world, the Zuse Z4 relay machine (1945).

From BLOG@CACM
#### Automatic Translators are Not Really Capable of Learning

One does not get the impression the Google Translate and DeepL translation programs are self-learning and have made real progress.

From BLOG@CACM
#### The World's Largest Commercial Cylindrical Slide Rule has a Scale Length of 24m

The world's largest mass-produced cylindrical slide rules come from Loga-Calculator AG in Zurich/Uster, Switzerland.

From BLOG@CACM
#### Why Is There No Well-Known Swiss IT Industry?

Herbert Bruderer asks why no information technology industry emerged in Switzerland in the 1950s, despite the appearance of computers from several sources.

From BLOG@CACM
#### Leonardo da Vinci's Robot Lion

We are celebrating the 500th anniversary of Leonardo da Vinci's death with a major exhibition of the Renaissance painter's works.

From BLOG@CACM
#### How Do You Calculate with the Sector?

The sector was developed in the second half of the 16th century, and was in widespread use until the end of the 19th century,

From BLOG@CACM
#### The Model Maker of Leonardo da Vinci, Blaise Pascal, and Charles Babbage

Discovery of a previously unknown replica of the legendary Swiss Millionaire calculating machine at Carnegie Mellon University in Pittsburgh, PA.

From BLOG@CACM
#### Mystery Dating of the World-famous 'Millionaire' Calculating Machine Solved

Regarding the discovery of new documents about the H.W. Egli AG (Zurich) company in the Museum für Kommunikation, Berne, Switzerland.

From BLOG@CACM
#### Did Albert Einstein Calculate on the 'Millionaire' in Zurich?

In 1897, ETH Zurich was the first university in the world to have a copy of the legendary four-species calculating machine Millionaire.

From BLOG@CACM
#### The Binary System Was Created Long Before Leibniz

There are reports of much older number systems using only two symbols that have been developed mainly in Asia.