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Character input/output device

  • US 4,905,007 A
  • Filed: 05/29/1987
  • Issued: 02/27/1990
  • Est. Priority Date: 05/29/1987
  • Status: Expired due to Term
First Claim
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1. A character input/pointing and positioning device for a computer, comprising:

  • (a) a substantially planar centre plate;

    (b) selection recognition means arranged around said centre plate;

    (c) a disk centred at and slidably movable about said centre plate in a plane parallel to said centre plate such that said disk may be moved toward said selection recognition means to make a selection, said disk having a top cavity such that a tip of a pointed instrument may be inserted into said cavity and confined thereby to control the movement of said disk.

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