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Today in Tech History – December 21





1898 – Building on Henri Becquerel’s discovery of spontaneous radioactivity two years earlier the husband-and-wife team of Pierre and Marie Curie discovered Radium. Marie Particularly figured out how to separate it from its radioactive residues.



1929APT and AED Developer Doug Ross Born
            Douglas T. Ross is born in Canton, China. He received an AB from Oberlin College in 1951 and an SM from MIT in 1954. He worked with John Ward on the Cape Cod Air Defense System Project, held many positions at MIT, including head of the Computer Applications Group at the Electronic System Laboratory, and was project engineer for the MIT Computer-Aided Design project. He developed APT (Automatically Programmed Tools) – now an international standard – and AED (Automated Engineering Design) projects which were early precursors of the languages and system of modern CAD and CAM systems. These projects were run in close connection with the Whirlwind, TX-0, TX-2, Project MAC, and CTSS.

                                         

1937Snow White Premieres
             Walt Disney premiers the animated film Snow White and the Seven Dwarfs. It was the first full-length animated feature film taking 3 years and nearly $1.5 million to produce, a massive amount for a feature film in 1937. Walt Disney had to mortgage his house to help finance the film.

                                         

1968Integrated Circuits Used in Moonshot
             The Apollo Guidance Computer (AGC) was responsible for guidance, navigation, and control computations in the Apollo space program. The AGC was the first computer to use integrated circuit logic and occupied less than 1 cubic foot of the spacecraft. It stored data in 15 bit words (with one parity bit) and had a memory cycle time of 11.7 microseconds. Astronauts communicated with the AGC using the “DSKY” (Display Keyboard). It used digital displays and communicated with astronauts using verb and noun buttons, and a two-digit operation and operand code.
 The AGC and DSKY from part of The Computer History Museum permanent collection.



2000Child Internet Protection Act into Law
             President Bill Clinton signs the Child Internet Production Act into law. The law is implemented to set rules for the web to expose them to pornography and sexual content. In 2003 the law will be challenged, but will be upheld.
COPA required websites with “material harmful to minors” to restrict their sites access with proof of age. “Material harmful to minors” was defined as material. This included sexual acts or nudity.
 

                                         

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