Absolute position controller

Apparatus for determining the absolute position of a point on a surface or along a path including a tablet, scale, or overlay and a moveable mouse-type cursor. The tablet includes a unique pattern of lines or regions along rectilinear or other axes. A series of adjacent spaces formed by the lines de...

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Bibliographic Details
Main Author JOYCE; STEPHEN A
Format Patent
LanguageEnglish
Published 21.03.1989
Edition4
Subjects
CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
PHYSICS
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