11937935
Unit 1.3 v2
- There are 3
Main types
of storage
Optical,
Solid State
and
Magnetic
- Optical
- Optical
Storage
was used
for CD’s
and DVD’s
because
once they
are given
to
someone
else it can’t
be edited
- This use to
be the way
people had
music and
how they
watched
dvds
- Optical
Storage
was used
for CD’s
and DVD’s
because
once they
are given
to
someone
else it can’t
be edited
- Solid
State
- Solid State
is the type
of
secondary
storage
people
would use
for their
Phones
- It is very
cheap and
Robust the
use it for
scanners
- It is very
cheap and
Robust the
use it for
scanners
- Made of
microchips
so it can
process
data faster
this makes
work
easier
- Solid State
is the type
of
secondary
storage
people
would use
for their
Phones
- Magnetic
- They can
be
modified
so it can be
read only
- This is
when
Magnetic
sockets go
in and out
of the drive
- They can
be
modified
so it can be
read only
- Secondary
Storage is
non volatile
so the data
won’t
delete after
every
reboot
- Optical
- We need
secondary
storage
because we
can’t hold
enough
data with
RAM.
- When
Buying
Secondary
Storage
- Is it
Cheap?
- Is it
Robust?
- Is it
Portable?
- Is it
Durable?
- Is it fast?
- How much
data can it
hols
- Is it
Cheap?
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