Electronic calculator with optical input means
US4091270A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 19, 1976 |
| Grant date | May 23, 1978 |
| Priority date | — |
| Expiry date | Jul 19, 1996 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F15/0225
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A keyless electronic calculator includes an optical bar-code reader for entering bar-coded program information, in the form of data and individual commands or complete programs, into the calculator. The calculator also includes a read-write memory unit (RWM) for storing the entered information, a central processing unit (CPU) having a read-only-memory unit (ROM) with pre-stored routines for processing data by executing the entered commands or program under control of the ROM routines, and a display unit for displaying entered data and execution results. An alternative embodiment of the calculator includes both an optical input means and a keyboard.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.