Electronic calculator with function keys
US4053753A · kind A · utility
6Cited by
4References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 19, 1976 |
| Grant date | Oct 11, 1977 |
| Priority date | — |
| Expiry date | Mar 19, 1996 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0202
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
In an electronic desk-top calculator, there are provided input means including at least one function key, a plurality of arithmetical operation keys and a plurality of numeric keys, and means for effecting functional operation by depression of the function key, one of the numeric keys and one of said arithmetic operation keys, in such order.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.