From tablets to Google Glasses, education technology has a colorful history. Take a look back and a peek forward.
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The Scholastic Aptitude Test, founded in 1926 by the College Board, was first scored automatically in 1936 by an IBM 805 computer, which used electrical current to detect marks made by special pencils. But it wasn't until optical scanners, able to detect the marks of the ubiquitous No. 2 pencil, that standardized college entrance exams became a rite of passage for millions of college-bound juniors and seniors in the United States.
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