Single chip MOS computer with expandable memory
US4153933A · kind A · utility
76Cited by
23References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 13, 1978 |
| Grant date | May 8, 1979 |
| Priority date | — |
| Expiry date | Feb 13, 1998 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F15/7814
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An MOS digital computer incorporated on a single chip (monolithic structure) which includes a central processing unit (CPU), random-access memory (RAM), and a programmable read-only memory (PROM). A program counter is used to fetch instructions stored in the erasable PROM, and may also be used to fetch instructions from an external memory. The PROM may also be externally addressed for testing, or may be electrically isolated from the remainder of the computer to permit execution of external instructions for testing the CPU and RAM.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.