Compact electronic calculator having graph display function
US4794553A · kind A · utility
29Cited by
4References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 9, 1986 |
| Grant date | Dec 27, 1988 |
| Priority date | — |
| Expiry date | May 9, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G5/36
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A compact electronic calculator having a graph display function of the invention has function keys for inputting functional formulas, a memory for storing an input functional formula, range input keys for inputting range data for variables in the formula, a memory for storing the range data, and a read-only memory (ROM) for storing a control program which sequentially calculates the values of the dependent variable for the independent variable with an ALU in accordance with the functional formula and the range data and which displays the calculated values on a display component.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.