Lincoln Wand
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The Lincoln Wand is the first ever 3D computer input device.[1]
It was developed by Lawrence G. Roberts at the MIT Lincoln Lab and shown in 1963. It was an ultrasonic position-sensing device that tracked the x, y, and z coordinates of a pen-like wand in real time.
The wand used an ultrasonic signal and four microphones mounted at the corners of a rectangle. It did acoustic tracking based on time-of-flight.
References[edit]
- ↑ Burton, Robert P.; Sutherland, Ivan E. (1974). "Twinkle box: a three-dimensional computer input device". ACM Press. p. 513. doi:10.1145/1500175.1500278. http://portal.acm.org/citation.cfm?doid=1500175.1500278.