Home›Apple II family›群符号記録🌐日本語EnglishDeutschEspañolItalianoSvenskaРусский中文日本語EntityQ337290· pop 7· linked from 55 articles群符号記録Also known as GCR, group code recording (GCR), group code recordingseveral distinct but related encoding methods for magnetic mediaAvailable in 7 languagesEspañolDeutsch日本語РусскийItalianoSvenskavia Wikidata sitelinks · CC0Connectionsmagnetic storageEntityApple Inc.ConceptCategoriesApple II familyCommodore storage devicesComputer storage tape mediaError detection and correctionLine codesRotating disc computer storage media