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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...

From BLOG@CACM
#### The Art Of Speedy Systems Conversions

System conversions represent a type of development in which project scope includes all the effort of an initial software release, plus an entirely new set of complexities...

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
#### Computer Systems Research: The Joys, the Perils, and How to Count Beans Well

This post is meant to highlight my subjective take on the joys and the road bumps on the way to doing innovative work in computer systems.

From BLOG@CACM
#### Birthday Bit Boundaries

Which birthdays would have special significance if our culture were binary-based instead of decimal-based?

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
#### Technology in the Time of Cataclysms

How is the development of technology, and its more basic cousin science, affected during such cataclysmic times?

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
#### Hacking the Axis

The role of early high-performance computing capabilities in World War II.

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
#### Are My Requirements Complete?

Knowing the notion of sufficient completeness and the theory of abstract data types helps practitioners produce better requirements.

From BLOG@CACM
#### Soundness and Completeness: With Precision

The two key properties of program analysis are dual of each other.

From BLOG@CACM
#### An Agile Approach to Learning Programming

The Super Simple Programming Book is one example to teach programming in an Agile way. In general, Agile concepts can lead to highly effective learning.

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.