Carry look ahead circuit
US5424972A · kind A · utility
0Cited by
6References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 3, 1993 |
| Grant date | Jun 13, 1995 |
| Priority date | — |
| Expiry date | Sep 3, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F7/508
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A carry look ahead circuit includes a first circuit for generating a logical sum of inputs, a second circuit for generating a logical product of the inputs, and a selection circuit for selecting either one of an output of the first circuit and an output of the second circuit in accordance with a carry signal from a lower figure to produce the selected output as a carry signal. Consequently, the number of circuit elements can be reduced greatly to configure the high speed and low power consumption carry look ahead circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.