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Kevin Watson

Top Ten Inventions - 1 views

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    An opinion of the top ten inventions of all time. Some I agree with. Other's I don't.
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    This was really cool to read.
LeeAnne Lowry

Philo Farnsworth - 0 views

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    The top ten inventions post got me interested in learning how they were invented, and I especially like the explanation of the invention of the television--not to mention it was invented by Philo Farnworth, a "Mormon"!
Mike Lemon

The ENIAC Story - 1 views

  • As in many other first along the road of technological progress, the stimulus which initiated and sustained the effort that produced the ENIAC (electronic numerical integrator and computer)--the world's first electronic digital computer--was provided by the extraordinary demand of war
  • This Department had the responsibility for the design, development, procurement, storage, and issue of all combat materiel and munitions for the Army. In 1939 it was staffed by a relative handful of officers and career civilian employees.
  • One of the extraordinarily important tasks
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  • was the preparation of firing and bombing tables for the Army which at that time, of course, included the Army Air Corps.
  • The analyzer installed at Aberdeen had ten integrating units and provisions for two input and two output tables as well. But, despite its value as an important mechanical aid to computation, it had several severe limitations.
  • It was, of course, known that the Moore School of Electrical Engineering of the University of Pennsylvania had a Bush differential analyzer of somewhat larger capacity than the one installed at Aberdeen. As a matter of fact, the one at the Moore School had fourteen integrating units. Therefore one of the first steps taken was the award to the University of Pennsylvania of a contract by the Ordnance Department for the utilization of this device.
  • he original agreement between the United States of America and the trustees of the University of Pennsylvania, dated June 5, 1943, called for six months of "research and development of an electronic numerical integrator and computer and delivery of a report thereon." This initial contract committed $61,700 in U.S. Army Ordnance funds
  • The ENIAC was placed in operation at the Moore School, component by component, beginning with the cycling unit and an accumulator in June 1944. This was followed in rapid succession by the initiating unit and function tables in September 1945 and the divider and square-root unit in October 1945. Final assembly took place during the fall of 1945. By today's standards for electronic computers the ENIAC was a grotesque monster. Its thirty separate units, plus power supply and forced-air cooling, weighed over thirty tons. Its 19,000 vacuum tubes, 1,500 relays, and hundreds of thousands of resistors, capacitors, and inductors consumed almost 200 kilowatts of electrical power. But ENIAC was the prototype from which most other modern computers evolved. It embodied almost all the components and concepts of today's high- speed, electronic digital computers. Its designers conceived what has now become standard circuitry such as the gate (logical "and" element), buffer (logical "or" element) and used a modified Eccles-Jordan flip-flop as a logical, high-speed storage-and-control device.
  • The ENIAC was not originally designed as an internally programmed computer. The program was set up manually by varying switches and cable connections. However, means for altering the program and repeating its iterative steps were built into the master programmer
  • The ENIAC led the computer field during the period 1949 through 1952 when it served as the main computation workhorse for the solution of the scientific problems of the Nation. It surpassed all other existing computers put together whenever it came to problems involving a large number of arithmetic operations. It was the major instrument for the computation of all ballistic tables for the U.S. Army and Air Force.
anonymous

Edward R. Murrow - Wikipedia, the free encyclopedia - 0 views

  • See It Now focused on a number of controversial issues in the 1950s, but it is best-remembered as the show that criticized McCarthyism and the Red Scare, contributing if not leading to the political downfall of Senator Joseph McCarthy. On March 9, 1954, Murrow, Friendly, and their news team produced a half-hour See It Now special entitled "A Report on Senator Joseph McCarthy".[9] Murrow used excerpts from McCarthy's own speeches and proclamations to criticize the senator and point out episodes where he had contradicted himself. Murrow knew full well that he was using the medium of television to attack a single man and expose him to nationwide scrutiny, and he was often quoted as having doubts about the methods he used for the report. Murrow and Friendly paid for their own newspaper advertisement for the program; they were not allowed to use CBS' money for the publicity campaign or even use the CBS logo. Nevertheless, the broadcast contributed to a nationwide backlash against McCarthy and is seen as a turning point in the history of television. It provoked tens of thousands of letters, telegrams and phone calls to CBS headquarters, running 15 to 1 in favor. In a retrospective produced for Biography, Friendly noted how truck drivers pulled up to Murrow on the street in subsequent days and shouted "Good show, Ed. Good show, Ed." Murrow offered McCarthy a chance to appear on See It Now to respond to the criticism. McCarthy accepted the invitation and made his appearance three weeks later,[10] but his rebuttal only served to further decrease his already fading popularity.[11] In the program following McCarthy's appearance, Murrow commented that the senator had "made no reference to any statements of fact that we made" and contested the personal attacks made by "the junior senator from Wisconsin" against himself.[12]
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