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How Does One Divide with Napier's Rods?
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.

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.

New Areas for Application of Self-Organizing Routing
From BLOG@CACM

New Areas for Application of Self-Organizing Routing

To organize the productive work of multiprocessor chips, it is necessary to establish an efficient distribution of computational processes between computational...

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.

The World's Most Magnificent Historical Automatons
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.

Superb Historical Robots
From BLOG@CACM

Superb Historical Robots

The world's most magnificent historical robots.

An Enigmatic Device from Denmark
From BLOG@CACM

An Enigmatic Device from Denmark

Discovery of a very rare surveying instrument in Denmark.

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

Tracking Down a Seminal Work on Computer Construction – in Russian

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

Discovery: User Manual of the Oldest Surviving Computer in the World
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).
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