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GRAPHIC ANSWER INPUT DEVICE FOR A TEACHING MACHINE
GRAPHIC ANSWER INPUT DEVICE FOR A TEACHING MACHINE
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机译:教学机的图形答案输入设备
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摘要
A graphic answer input device for a teaching machine comprising successively superimposed parts: a contact-bearing board every contact of which is connected to the logical unit of the teaching machine via two diodes individually connected in the forward direction; a punched card; a current-carrying plate and a problem blank on which the student drafts the required drawing.
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