Microcomputer system employing program cartridges
US4607347A · kind A · utility
7Cited by
2References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 10, 1983 |
| Grant date | Aug 19, 1986 |
| Priority date | — |
| Expiry date | Aug 10, 2003 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F12/0638
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A microcomputer system employs internal read-only memory devices and external read-only memory devices in pluggable cartridges. Each cartridge includes jumper links in leads from the external memories through the cartridge socket to a memory select unit and jumper links in leads leading from earth through the cartridge socket to enable inputs of the internal memories. By linking selected ones of the jumper links in the cartridge, the external memory can be used as an add-on memory or as a base memory replacing the internal memory.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.