<s>
On	O
August	O
25th	O
1981	O
,	O
Sony	O
unveiled	O
a	O
prototype	O
of	O
the	O
Sony	O
Mavica	O
as	O
the	O
world	O
's	O
first	O
electronic	O
still	B-Algorithm
video	I-Algorithm
camera	I-Algorithm
.	O
</s>
<s>
Its	O
CCD	B-Algorithm
sensor	I-Algorithm
produced	O
an	O
analog	O
video	O
signal	O
in	O
the	O
NTSC	O
format	O
at	O
a	O
resolution	O
of	O
pixels	B-Algorithm
.	O
</s>
<s>
The	O
unreleased	O
original	O
MAVICA	O
as	O
well	O
as	O
the	O
later	O
ProMavica	O
MVC-5000	O
and	O
MVC-7000	O
were	O
designed	O
as	O
single-lens	B-Algorithm
reflex	I-Algorithm
systems	O
with	O
interchangeable	O
lenses	O
.	O
</s>
<s>
The	O
earliest	O
of	O
these	O
digital	O
models	O
recorded	O
onto	O
3.5	O
"	O
1.4	O
MiB	O
2HD	O
floppy	O
disks	O
in	O
computer-readable	O
DOS	B-Device
FAT12	B-Application
format	O
,	O
a	O
feature	O
that	O
made	O
them	O
very	O
popular	O
in	O
the	O
North	O
American	O
market	O
.	O
</s>
<s>
With	O
the	O
evolution	O
of	O
consumer	O
digital	B-Device
camera	I-Device
resolution	O
(	O
megapixels	B-Algorithm
)	O
,	O
the	O
advent	O
of	O
the	O
USB	B-Protocol
interface	O
and	O
the	O
rise	O
of	O
high-capacity	O
storage	O
media	O
,	O
Mavicas	O
started	O
to	O
offer	O
other	O
alternatives	O
for	O
recording	O
images	O
:	O
the	O
floppy-disk	O
(	O
FD	O
)	O
Mavicas	O
began	O
to	O
be	O
Memory	O
Stick	O
compatible	O
(	O
initially	O
through	O
a	O
Memory	O
Stick	O
Floppy	O
Disk	O
adapter	O
,	O
but	O
ultimately	O
through	O
a	O
dedicated	O
Memory	O
Stick	O
slot	O
)	O
,	O
and	O
a	O
new	O
CD	O
Mavica	O
series	O
—	O
which	O
used	O
8cm	O
(	O
3	O
"	O
)	O
CD-R/CD	O
-RW	O
media	O
—	O
was	O
released	O
in	O
2000	O
.	O
</s>
<s>
The	O
first	O
CD-based	O
Mavica	O
(	O
MVC-CD1000	O
)	O
,	O
notable	O
also	O
for	O
its	O
10×	O
optical	O
zoom	O
,	O
could	O
only	O
write	O
to	O
CD-R	O
discs	O
,	O
but	O
it	O
was	O
able	O
to	O
use	O
its	O
USB	B-Protocol
interface	O
to	O
read	O
images	O
from	O
CDs	O
not	O
finalized	O
(	O
CDs	O
with	O
incomplete	O
sessions	O
)	O
.	O
</s>
<s>
A	O
couple	O
of	O
the	O
models	O
were	O
formed	O
with	O
a	O
single	B-Algorithm
lens	I-Algorithm
reflex	I-Algorithm
component	O
combined	O
with	O
an	O
interchangeable	O
lens	O
.	O
</s>
<s>
Sony	O
continues	O
to	O
produce	O
digital	B-Device
cameras	I-Device
in	O
the	O
Cyber-shot	B-Device
and	O
Alpha	B-Algorithm
series	O
,	O
which	O
use	O
Memory	O
Stick	O
and	O
other	O
flash	O
card	O
technologies	O
for	O
storage	O
.	O
</s>
<s>
There	O
were	O
other	O
digital	B-Device
cameras	I-Device
that	O
used	O
disk	O
storage	O
as	O
memory	O
media	O
:	O
</s>
<s>
Panasonic	O
PV-SD4090	O
and	O
PV-SD5000	O
,	O
digital	B-Device
cameras	I-Device
that	O
used	O
SuperDisk	B-Device
(	O
LS120	B-Device
)	O
.	O
</s>
