Everything about Group coded recording
Encoding methods for representing data on magnetic media
In computer science, group coded recording or group code recording (GCR) refers to several distinct but related encoding methods for representing data on magnetic media. The first, used in 6250 bpi magnetic tape since 1973, is an error-correcting code combined with a run-length limited (RLL) encoding scheme, belonging into the group of modulation codes. The others are similar encoding methods used in mainframe hard disks or microcomputer floppy disks until the late 1980s. GCR is a modified form of a NRZI code, but necessarily with a higher transition density. Wikipedia →
🧠Start here: a 6-step reading path
- Read the overview: Group coded recordingA 5-minute orientation
- Pick up a classic book: Step-By-Step Medical CodingThe most-reprinted book on the subject
- Go sideways: Modified frequency modulationA closely related topic
- Go sideways: Disk densityA closely related topic
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đź“š Books worth reading
Step-By-Step Medical CodingCarol J. Buck · 1996- 📕ICD-10-CM/PCS codingKarla R. Lovaasen · 2012
Workbook for ICD-10-CM/PCS CodingKarla R. Lovaasen, Jennifer Schwerdtfeger · 2011
Certified coding specialist--physician-based (CCS-P)Anita C. Hazelwood · 2011
Next StepCarol J. Buck · 2013- 📕Medical Coding Certification Exam PreparationCynthia L. Stewart, Cynthia L. Ward · 2013
2016 step-by-step medical codingCarol J. Buck · 2016
Virtual Medical Office for Step-by-Step Medical CodingCarol J. Buck · 2007
Ranked by number of editions on Open Library, a rough measure of how lasting a book is.
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