For example in the past, how would movies or TV shows get copied on to millions of VHS tapes for people to watch at home? Do they all get copied from the very Original tape and how did they make sure that the original wasn’t damaged or something…?
In: Technology
If you’re asking how it’s done, they simply had a machine that would code the magnetic reel with the proper data. This could be done on large scale or small scale. They had smaller at home versions of this that would allow you to take data from one vhs and copy it onto another. Similarly the record button on your vhs will code the film with new data but not before it the tape passes an erase head which is a drum that passes a high level, high frequency AC signal which will wipe the portion of tape that passes over it.
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