Data entry devices
US4077036A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 30, 1976 |
| Grant date | Feb 28, 1978 |
| Priority date | — |
| Expiry date | Aug 30, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S200/29
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Apparatus for generating coded signals commensurate with information to be entered into associated equipment includes a matrix of magnetically operated switches. The switches are disposed beneath a generally planar data entry area and transparent indicia bearing overlays are received on the data entry area; the overlays including target points aligned with individual switches and there typically being fewer target points than switches whereby the overlay has space for the indicia and a plurality of overlays are utilized to take full advantage of the capability of the matrix. The apparatus may also include light emitting devices associated with the switches to provide operator feedback or guidance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.