Logarithmic calculating apparatus
US4852038A · kind A · utility
9Cited by
20References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 2, 1985 |
| Grant date | Jul 25, 1989 |
| Priority date | — |
| Expiry date | Jul 2, 2005 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F1/0307
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A calculating apparatus receives four operands ("a, b, c and d") simultaneously. A first multiplier/divider performs the calculation of a*b or a.div.b and provides an output u. A second multiplier/divider performs the calculation of c*d or c.div.d and provides an output v. An adder/subtractor receives u and v and performed the calculation of u+v and u-v. A controller controls the operation of the first and second multiplier/divider to select the operation of multiplication or division.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.