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Subject :NCO    Class : Class 4
who is the father of disk drive and by which it was made?

Ans 1:

Class : Class 5
Reynold B.Johnson is the father of disk drives all times.Aluminium platters are often found in desktop computers.Platters are typically made using an aluminium or glass and ceramic substrate.In disk manufacturing,a thin coating is deposited on both sides of the substrate,mostly by a vacuum deposition process called magnetron sputtering.

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