Secondary memory
Ø
Sequential memory:- a sequential memory access storage
device is one in which the location desired may be sequential through the
location.
Ex – magnetic tape.
Ø
Direct access memory:- the information is stored or available
in any order .
Ø
It is
a direct access memory which is made up of optical fibre.
Ex :- CD-ROM, WORM, :- WRITE ONLY READ MOD.
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