Decimal computing apparatus, electronic device connectable decimal computing apparatus, arithmetic operation apparatus, arithmetic operation control apparatus, and program-recorded recording medium
US7716267B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 19, 2005 |
| Grant date | May 11, 2010 |
| Priority date | — |
| Expiry date | Jul 16, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2207/4911
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Decimal calculation apparatus, which performs multidigit decimal calculation with the number of calculation digits set in calculation instruction, comprises multidigit memory section capable of storing values with greater numbers of digits than the number of digits of a predetermined digit unit in plurality of memory areas; calculation-instruction memory section which stores calculation instruction having the number of calculation digits and type of calculation set therein; and decimal calculation section which performs decimal calculation of sequentially calculating numerical values of corresponding digit units respectively stored in plurality of memory areas of the multidigit memory section, digit unit by digit unit in the number of calculation digits set in calculation instruction stored in calculation-instruction memory section, in decimal calculation according to type of calculation set in calculation instruction stored in calculation-instruction memory section, and sequentially writing calculation results in plurality of memory areas of multidigit memory section digit unit by digit unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.