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James Ernest Smith, founder of the National Radio Institute. The National Radio School was established in 1914 in Washington, D.C., by James Ernest Smith (1881–1973) and Emanuel R. Haas (1891–1947). 1 Smith was a teacher at McKinley Manual Training School (which was moved in 1926 to its final location now known as McKinley Technology High School).
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Computer technicians work in a variety of settings, encompassing both the public and private sectors.Because of the relatively brief existence of the profession, institutions offer certificate and degree programs designed to prepare new technicians, but computer repairs are frequently performed by experienced and certified technicians who have little formal training in the field.
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Academic videos, mainly covering science, engineering and technology Free ? Florida State University: The Great Courses: Multidisciplinary Educational videos with expert-led courses, tutorials and documentaries Paid ? The Great Courses: Gresham College: Multidisciplinary Institution with a history of "free public lectures" hosts many online. [1 ...
The first mark sense scanner was the IBM 805 Test Scoring Machine; this read marks by sensing the electrical conductivity of graphite pencil lead using pairs of wire brushes that scanned the page. In the 1930s, Richard Warren at IBM experimented with optical mark sense systems for test scoring, as documented in US Patents 2,150,256 (filed in ...
A webcam is mounted on arms to operate a document camera, allowing it to be positioned over a page. The camera connects to a projector or similar video display system, enabling a presenter to write on a sheet of paper or display a two or three-dimensional object while the audience watches. Larger objects, for instance, can be positioned in ...