# core rope memory

> read-only memory in which ferrite cores in a rope act merely as transformers, and whether a word line wire couples or not to the core encodes bits; first used in the 1960s by NASA in Mariner probes and in the Apollo Guidance Computer

**Wikidata**: [Q5170214](https://www.wikidata.org/wiki/Q5170214)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Core_rope_memory)  
**Source**: https://4ort.xyz/entity/core-rope-memory


## References

1. Freebase Data Dumps. 2013