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Understanding NoSQL Database Types: Graph Databases
SQL represents data stored in rows and tables, while high-growth NoSQL is data stores arranged via nested documents as columnar…
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
How Do You Calculate on the Abacus?
Considering the use of one of the most long-lived calculating devices.
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
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
Would There Be Computers Without Easter?
Finding roots of computing in the computation of Easter.
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
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
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