San Antonio College Library

The genesis of the digital idea and why it transformed civilization. A few short decades ago, we were informed by the smooth signals of analog television and radio; we communicated using our analog telephones; and we even computed with analog computers. Today our world is digital, built with zeroes and ones. Why did this revolution occur? The Discrete Charm of the Machine explains, in an engaging and accessible manner, the varied physical and logical...

During World War II, British mathematician Bill Tutte broke a code ten times tougher than Enigma, with the help of engineer Tommy Flowers, who designed the world's first programmable computer to help decipher encrypted German messages. This program tells the story of how Tutte and Flowers, working with a handful of brilliant men at secret intelligence base Bletchley Park, devised a way for Churchill to hack in to Hitler's communications network, winning...

Describes the lesser-known technological talents of actress Hedy Lamarr and the collaborative work with avant-garde composer George Antheil that eventually led to the development of spread-spectrum radio, cell phones, and GPS systems.

Produced by filmmaker Matt Ehling and the Bill of Rights Defense Committee, this 26 minute DVD explores the repercussions of the FBI's power to demand hundreds of thousands of Americans' private records without and oversight by a court or by Congress within the broader context of increasing unwarranted government spying and surveillance.

Describes the Corps' responsibility for developing, procuring, and furnishing signal equipment. The development of radar is featured, as well as the development of frequency modulation and its impact on the use of tanks.