Multi-item data input apparatus
US4297028A · kind A · utility
0Cited by
5References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 17, 1980 |
| Grant date | Oct 27, 1981 |
| Priority date | — |
| Expiry date | Apr 17, 2000 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0238
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A multi-item data input apparatus for manual generation of data to designate selected ones of a plurality of items comprises lists of items visibly written in matrix array form on a number of sheets, with the sheets being rolled around a cylindrical holder in successively overlapping relationship. Means are provided for unrolling a selected one of the sheets such as to position the corresponding item array below a keyboard having a transparent key above each item. Actuation of a key causes an electrical signal designating the corresponding item to be generated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.