🌐EnglishEnglishDeutschEspañolItalianoSvenskaРусский中文日本語EntityQ337290· pop 7· linked from 55 articlesgroup coded recordingAlso 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