Communications of the ACM
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From BLOG@CACM
How Does a Pantograph Work?
Pantographs have been widely used for centuries; for example, in surveying and embroidery. With these devices, drawings can be enlarged and reduced.
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
The African Enigma: Who Knows More?
Tally sticks and notched bones are among the oldest digital data carriers.
From BLOG@CACM
Who Manufactured the Mysterious Chinese Android?
In the 18th century, there were several famous makers of automatons in Europe; who created the Chinese musical clock automaton figure?
From BLOG@CACM
Leonardo's Self-driving Car
Leonardo da Vinci, who died 500 years ago, had already designed a self-driving car.
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
Google Translate Does Not UÂnderstand the Content of the Texts
How well do translation programs translate?
From BLOG@CACM
In Search of A Rare Roman Pocket Calculator
As far as we know, three original copies of the Roman hand abacus have survived. There is a fourth device, but nobody knows where it is.
From BLOG@CACM
Calculating With Roman Numerals is Not So Difficult
How to deal with Roman numerals and without a sign for zero in an additive number system, if no hand abacus is available?
From BLOG@CACM
How Did the Romans Calculate?
Experts are still wondering how the Romans calculated with their number system.
From BLOG@CACM
More Replicas of Historical Calculating Machines Found
Documenting the discovery of several previously unknown replicas of historical computing devices made by Roberto A. Guatelli.
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
There Are No Digital Humanities
Many think that the opposite of digital is analog or mechanical.
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
Algorithms Have Been Around for 4,000 Years
For some years now, the terms "algorithms", "digitization" and "artificial intelligence" have become commonplace. However, these terms are rarely explained. One...
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.
From BLOG@CACM