<s>
Microcomputers	B-Architecture
became	O
the	O
most	O
common	O
type	O
of	O
computer	O
in	O
the	O
late	O
20th	O
century	O
.	O
</s>
<s>
The	O
term	O
“	O
microcomputer	B-Architecture
”	O
was	O
introduced	O
with	O
the	O
advent	O
of	O
systems	O
based	O
on	O
single-chip	O
microprocessors	B-Architecture
.	O
</s>
<s>
The	O
best-known	O
early	O
system	O
was	O
the	O
Altair	B-Architecture
8800	I-Architecture
,	O
introduced	O
in	O
1975	O
.	O
</s>
<s>
The	O
term	O
"	O
microcomputer	B-Architecture
"	O
has	O
practically	O
become	O
an	O
anachronism	O
as	O
it	O
has	O
fallen	O
into	O
disuse	O
.	O
</s>
<s>
Desktop	B-Device
computers	I-Device
–	O
A	O
case	O
put	O
under	O
or	O
on	O
a	O
desk	O
.	O
</s>
<s>
Rackmount	B-Application
computers	O
–	O
The	O
cases	O
of	O
these	O
computers	O
fit	O
into	O
19-inch	B-Application
racks	I-Application
,	O
and	O
maybe	O
space-optimized	O
and	O
very	O
flat	O
.	O
</s>
<s>
A	O
dedicated	O
display	O
,	O
keyboard	O
,	O
and	O
mouse	O
may	O
not	O
exist	O
,	O
but	O
a	O
KVM	B-Device
switch	I-Device
or	O
built-in	O
remote	O
control	O
(	O
via	O
LAN	B-General_Concept
or	O
other	O
means	O
)	O
can	O
be	O
used	O
to	O
gain	O
console	O
access	O
.	O
</s>
<s>
Many	O
servers	B-Application
are	O
rackmount	B-Application
computers	O
and	O
data	B-Operating_System
centers	I-Operating_System
may	O
have	O
dozens	O
or	O
hundreds	O
of	O
racks	O
with	O
hundreds	O
or	O
thousands	O
of	O
rackmount	B-Application
computers	O
acting	O
as	O
servers	B-Application
.	O
</s>
<s>
In-car	O
computers	O
(	O
carputers	B-Operating_System
)	O
–	O
Built	O
into	O
automobiles	O
,	O
for	O
entertainment	O
,	O
navigation	B-Application
,	O
etc	O
.	O
</s>
<s>
Laptops	B-Device
and	O
notebook	B-Device
computers	I-Device
–	O
Portable	O
and	O
all	O
in	O
one	O
case	O
.	O
</s>
<s>
Tablet	B-Device
computer	I-Device
–	O
Like	O
laptops	B-Device
,	O
but	O
with	O
a	O
touch-screen	B-Device
,	O
entirely	O
replacing	O
the	O
physical	O
keyboard	O
.	O
</s>
<s>
Smartphones	B-Application
,	O
smartbooks	B-Device
,	O
and	O
palmtop	B-Operating_System
computers	I-Operating_System
–	O
Small	O
handheld	B-Operating_System
personal	I-Operating_System
computers	I-Operating_System
with	O
limited	O
hardware	O
specifications	O
.	O
</s>
<s>
Programmable	B-Application
calculator	I-Application
–	O
Like	O
small	O
handhelds	B-Application
,	O
but	O
specialized	O
in	O
mathematical	O
work	O
.	O
</s>
<s>
Video	B-Device
game	I-Device
consoles	I-Device
–	O
Fixed	O
computers	O
built	O
specifically	O
for	O
entertainment	O
purposes	O
.	O
</s>
<s>
Handheld	B-Application
game	I-Application
consoles	I-Application
–	O
The	O
same	O
as	O
game	O
consoles	O
,	O
but	O
small	O
and	O
portable	O
.	O
</s>
<s>
Minicomputers	B-Architecture
(	O
colloquially	O
,	O
minis	O
)	O
are	O
a	O
class	O
of	O
multi-user	O
computers	O
that	O
lie	O
in	O
the	O
middle	O
range	O
of	O
the	O
computing	O
spectrum	O
,	O
in	O
between	O
the	O
smallest	O
mainframe	B-Architecture
computers	I-Architecture
and	O
the	O
largest	O
single-user	O
systems	O
(	O
microcomputers	B-Architecture
or	O
personal	B-Device
computers	I-Device
)	O
.	O
</s>
<s>
The	O
term	O
supermini	B-Device
computer	I-Device
or	O
simply	O
supermini	O
was	O
used	O
to	O
distinguish	O
more	O
powerful	O
minicomputers	B-Architecture
that	O
approached	O
mainframes	B-Architecture
in	O
capability	O
.	O
</s>
<s>
Superminis	O
(	O
such	O
as	O
the	O
DEC	B-Device
VAX	I-Device
or	O
Data	B-Device
General	I-Device
Eclipse	I-Device
MV/8000	I-Device
)	O
were	O
usually	O
32-bit	O
at	O
a	O
time	O
when	O
most	O
minicomputers	B-Architecture
(	O
such	O
as	O
the	O
PDP-11	B-Device
or	O
Data	B-Device
General	I-Device
Eclipse	I-Device
or	O
IBM	B-Device
Series/1	I-Device
)	O
were	O
16-bit	B-Device
.	O
</s>
<s>
These	O
traditional	O
minicomputers	B-Architecture
in	O
the	O
last	O
few	O
decades	O
of	O
the	O
20th	O
century	O
,	O
found	O
in	O
small	O
to	O
medium-sized	O
businesses	O
,	O
laboratories	O
and	O
embedded	O
in	O
(	O
for	O
example	O
)	O
hospital	O
CAT	O
scanners	O
,	O
often	O
would	O
be	O
rack-mounted	B-Application
and	O
connect	O
to	O
one	O
or	O
more	O
terminals	B-General_Concept
or	O
tape/card	O
readers	O
,	O
like	O
mainframes	B-Architecture
and	O
unlike	O
most	O
personal	B-Device
computers	I-Device
,	O
but	O
require	O
less	O
space	O
and	O
electrical	O
power	O
than	O
a	O
typical	O
mainframe	B-Architecture
.	O
</s>
<s>
The	O
term	O
mainframe	B-Architecture
computer	I-Architecture
was	O
created	O
to	O
distinguish	O
the	O
traditional	O
,	O
large	O
,	O
institutional	O
computer	O
intended	O
to	O
service	O
multiple	O
users	O
from	O
the	O
smaller	O
,	O
single-user	O
machines	O
.	O
</s>
<s>
Mainframe	B-Architecture
computers	I-Architecture
are	O
used	O
in	O
large	O
institutions	O
such	O
as	O
government	O
,	O
banks	O
,	O
and	O
large	O
corporations	O
.	O
</s>
<s>
A	O
supercomputer	B-Architecture
is	O
focused	O
on	O
performing	O
tasks	O
involving	O
intense	O
numerical	O
calculations	O
such	O
as	O
weather	O
forecasting	O
,	O
fluid	O
dynamics	O
,	O
nuclear	O
simulations	O
,	O
theoretical	O
astrophysics	O
,	O
and	O
complex	O
scientific	O
computations	O
.	O
</s>
<s>
A	O
supercomputer	B-Architecture
is	O
a	O
computer	O
that	O
is	O
at	O
the	O
front-line	O
of	O
current	O
processing	O
capacity	O
,	O
particularly	O
speed	O
of	O
calculation	O
.	O
</s>
<s>
The	O
term	O
supercomputer	B-Architecture
itself	O
is	O
rather	O
fluid	O
,	O
and	O
the	O
speed	O
of	O
today	O
's	O
supercomputers	B-Architecture
tends	O
to	O
become	O
typical	O
of	O
tomorrow	O
's	O
ordinary	O
computer	O
.	O
</s>
<s>
Supercomputer	B-Architecture
processing	O
speeds	O
are	O
measured	O
in	O
floating-point	O
operations	O
per	O
second	O
,	O
or	O
FLOPS	O
.	O
</s>
<s>
In	O
terms	O
of	O
computational	O
capability	O
,	O
memory	O
size	O
and	O
speed	O
,	O
I/O	O
technology	O
,	O
and	O
topological	O
issues	O
such	O
as	O
bandwidth	O
and	O
latency	O
,	O
supercomputers	B-Architecture
are	O
the	O
most	O
powerful	O
,	O
are	O
very	O
expensive	O
,	O
and	O
not	O
cost-effective	O
just	O
to	O
perform	O
batch	O
or	O
transaction	O
processing	O
.	O
</s>
<s>
Server	B-Application
usually	O
refers	O
to	O
a	O
computer	O
that	O
is	O
dedicated	O
to	O
providing	O
one	O
or	O
more	O
services	O
.	O
</s>
<s>
A	O
server	B-Application
is	O
expected	O
to	O
be	O
reliable	O
(	O
e.g.	O
</s>
<s>
For	O
even	O
increased	O
security	O
,	O
the	O
server	B-Application
may	O
be	O
mirrored	O
.	O
</s>
<s>
Many	O
smaller	O
servers	B-Application
are	O
actually	O
personal	B-Device
computers	I-Device
that	O
have	O
been	O
dedicated	O
to	O
provide	O
services	O
for	O
other	O
computers	O
.	O
</s>
<s>
A	O
database	B-Application
server	I-Application
is	O
a	O
server	B-Application
which	O
uses	O
a	O
database	B-Application
application	I-Application
that	O
provides	O
database	O
services	O
to	O
other	O
computer	B-Application
programs	I-Application
or	O
to	O
computers	O
.	O
</s>
<s>
Database	O
management	O
systems	O
(	O
DBMSs	O
)	O
frequently	O
provide	O
database-server	O
functionality	O
,	O
and	O
some	O
database	O
management	O
systems	O
(	O
such	O
as	O
MySQL	B-Application
)	O
rely	O
exclusively	O
on	O
the	O
client	B-Operating_System
–	I-Operating_System
server	I-Operating_System
model	I-Operating_System
for	O
database	O
access	O
while	O
others	O
(	O
such	O
as	O
SQLite	B-Language
)	O
are	O
meant	O
for	O
using	O
as	O
an	O
embedded	B-Application
database	I-Application
.	O
</s>
<s>
Users	O
access	O
a	O
database	B-Application
server	I-Application
either	O
through	O
a	O
"	O
front	B-Architecture
end	I-Architecture
"	O
running	O
on	O
the	O
user	O
's	O
computer	O
–	O
which	O
displays	O
requested	O
data	O
–	O
or	O
through	O
the	O
"	O
back	B-Architecture
end	I-Architecture
"	O
,	O
which	O
runs	O
on	O
the	O
server	B-Application
and	O
handles	O
tasks	O
such	O
as	O
data	O
analysis	O
and	O
storage	O
.	O
</s>
<s>
A	O
file	B-Application
server	I-Application
does	O
not	O
normally	O
perform	O
computational	O
tasks	O
or	O
run	O
programs	O
on	O
behalf	O
of	O
its	O
client	B-Protocol
workstations	B-Device
but	O
manage	O
and	O
store	O
a	O
large	O
collection	O
of	O
computer	B-Operating_System
files	I-Operating_System
.	O
</s>
<s>
The	O
crucial	O
function	O
of	O
a	O
file	B-Application
server	I-Application
is	O
storage	O
.	O
</s>
<s>
File	B-Application
servers	I-Application
are	O
commonly	O
found	O
in	O
schools	O
and	O
offices	O
,	O
where	O
users	O
use	O
a	O
local	B-General_Concept
area	I-General_Concept
network	I-General_Concept
to	O
connect	O
their	O
client	B-Protocol
computers	I-Protocol
and	O
use	O
Network-attached	B-Application
storage	I-Application
(	O
NAS	B-Application
)	O
systems	O
to	O
provide	O
data	O
access	O
.	O
</s>
<s>
A	O
web	B-Application
server	I-Application
is	O
a	O
server	B-Application
that	O
can	O
satisfy	O
client	B-Protocol
requests	O
on	O
the	O
World	O
Wide	O
Web	O
.	O
</s>
<s>
A	O
web	B-Application
server	I-Application
can	O
,	O
in	O
general	O
,	O
contain	O
one	O
or	O
more	O
websites	O
.	O
</s>
<s>
A	O
web	B-Application
server	I-Application
processes	O
incoming	O
network	B-Architecture
requests	O
over	O
HTTP	B-Protocol
and	O
several	O
other	O
related	O
protocols	O
.	O
</s>
<s>
The	O
primary	O
function	O
of	O
a	O
web	B-Application
server	I-Application
is	O
to	O
store	O
,	O
process	O
and	O
deliver	O
web	O
pages	O
to	O
clients	O
.	O
</s>
<s>
The	O
communication	O
between	O
client	B-Protocol
and	O
server	B-Application
takes	O
place	O
using	O
the	O
Hypertext	B-Protocol
Transfer	I-Protocol
Protocol	I-Protocol
(	O
HTTP	B-Protocol
)	O
.	O
</s>
<s>
Pages	O
delivered	O
are	O
most	O
frequently	O
HTML	B-Language
documents	I-Language
,	O
which	O
may	O
include	O
images	O
,	O
style	O
sheets	O
and	O
scripts	B-Language
in	O
addition	O
to	O
the	O
text	O
content	O
.	O
</s>
<s>
A	O
terminal	B-Device
server	I-Device
enables	O
organizations	O
to	O
connect	O
devices	O
with	O
an	O
RS-232	O
,	O
RS-422	O
or	O
RS-485	O
serial	O
interface	O
to	O
a	O
local	B-General_Concept
area	I-General_Concept
network	I-General_Concept
(	O
LAN	B-General_Concept
)	O
.	O
</s>
<s>
Products	O
marketed	O
as	O
terminal	B-Device
servers	I-Device
can	O
be	O
very	O
simple	O
devices	O
that	O
do	O
not	O
offer	O
any	O
security	O
functionality	O
,	O
such	O
as	O
data	O
encryption	O
and	O
user	O
authentication	O
.	O
</s>
<s>
These	O
provide	O
GUI	O
sessions	O
that	O
can	O
be	O
used	O
by	O
client	B-Protocol
PCs	B-Device
that	O
work	O
someway	O
like	O
a	O
remote	O
control	O
.	O
</s>
<s>
Only	O
the	O
screen	O
(	O
and	O
audio	O
)	O
output	O
is	O
shown	O
on	O
the	O
client	B-Protocol
.	O
</s>
<s>
The	O
GUI	O
applications	O
run	O
on	O
the	O
server	B-Application
,	O
data	O
(	O
like	O
in	O
files	O
)	O
would	O
be	O
stored	O
in	O
the	O
same	O
LAN	B-General_Concept
,	O
thus	O
avoiding	O
problems	O
,	O
should	O
a	O
client	B-Protocol
PC	O
be	O
damaged	O
or	O
stolen	O
.	O
</s>
<s>
A	O
server	B-Application
may	O
run	O
several	O
virtual	B-Architecture
machines	I-Architecture
(	O
VMs	O
)	O
for	O
different	O
activities	O
,	O
supplying	O
the	O
same	O
environment	O
to	O
each	O
VM	O
as	O
if	O
it	O
ran	O
on	O
dedicated	O
hardware	O
.	O
</s>
<s>
This	O
technology	O
approach	O
needs	O
special	O
hardware	O
support	O
to	O
be	O
useful	O
and	O
was	O
first	O
the	O
domain	O
of	O
mainframes	B-Architecture
and	O
other	O
large	B-Architecture
computers	I-Architecture
.	O
</s>
<s>
Nowadays	O
,	O
most	O
personal	B-Device
computers	I-Device
are	O
equipped	O
for	O
this	O
task	O
,	O
but	O
for	O
long-term	O
operation	O
or	O
critical	O
systems	O
,	O
specialized	O
server	B-Application
hardware	O
may	O
be	O
needed	O
.	O
</s>
<s>
Workstations	B-Device
are	O
computers	O
that	O
are	O
intended	O
to	O
serve	O
one	O
user	O
and	O
may	O
contain	O
special	O
hardware	O
enhancements	O
not	O
found	O
on	O
a	O
personal	B-Device
computer	I-Device
.	O
</s>
<s>
By	O
the	O
mid	O
1990s	O
personal	B-Device
computers	I-Device
reached	O
the	O
processing	O
capabilities	O
of	O
mini	B-Architecture
computers	I-Architecture
and	O
workstations	B-Device
.	O
</s>
<s>
Also	O
,	O
with	O
the	O
release	O
of	O
multi-tasking	B-Operating_System
systems	O
such	O
as	O
OS/2	B-Application
,	O
Windows	B-Device
NT	I-Device
and	O
Linux	B-Application
,	O
the	O
operating	O
systems	O
of	O
personal	B-Device
computers	I-Device
could	O
do	O
the	O
job	O
of	O
this	O
class	O
of	O
machines	O
.	O
</s>
<s>
Today	O
,	O
the	O
term	O
is	O
used	O
to	O
describe	O
desktop	B-Device
PCs	I-Device
with	O
high-performance	O
hardware	O
.	O
</s>
<s>
Information	B-Device
appliances	I-Device
are	O
computers	O
specially	O
designed	O
to	O
perform	O
a	O
specific	O
"	O
user-friendly	B-General_Concept
"	O
function	O
—	O
such	O
as	O
editing	B-Application
text	I-Application
,	O
playing	O
music	O
,	O
photography	O
,	O
videography	O
etc	O
.	O
</s>
<s>
The	O
term	O
is	O
most	O
commonly	O
applied	O
to	O
battery-operated	O
mobile	B-Application
devices	I-Application
,	O
though	O
there	O
are	O
also	O
wearable	B-Operating_System
devices	I-Operating_System
.	O
</s>
<s>
Embedded	B-Architecture
computers	I-Architecture
are	O
computers	O
that	O
are	O
a	O
part	O
of	O
a	O
machine	O
or	O
device	O
.	O
</s>
<s>
Embedded	B-Architecture
computers	I-Architecture
generally	O
execute	O
a	O
program	B-Application
that	O
is	O
stored	O
in	O
non-volatile	B-General_Concept
memory	I-General_Concept
and	O
is	O
only	O
intended	O
to	O
operate	O
a	O
specific	O
machine	O
or	O
device	O
.	O
</s>
<s>
Embedded	B-Architecture
computers	I-Architecture
are	O
very	O
common	O
.	O
</s>
<s>
The	O
majority	O
are	O
microcontrollers	B-Architecture
.	O
</s>
<s>
Embedded	B-Architecture
computers	I-Architecture
are	O
typically	O
required	O
to	O
operate	O
continuously	O
without	O
being	O
reset	O
or	O
rebooted	O
,	O
and	O
once	O
employed	O
in	O
their	O
task	O
the	O
software	O
usually	O
cannot	O
be	O
modified	O
.	O
</s>
<s>
An	O
automobile	O
may	O
contain	O
a	O
number	O
of	O
embedded	B-Architecture
computers	I-Architecture
;	O
however	O
,	O
a	O
washing	O
machine	O
or	O
DVD	B-Device
player	I-Device
would	O
contain	O
only	O
one	O
microcontroller	B-Architecture
.	O
</s>
<s>
Embedded	B-Architecture
computers	I-Architecture
are	O
chosen	O
to	O
meet	O
the	O
requirements	O
of	O
the	O
specific	O
application	O
,	O
and	O
most	O
are	O
slower	O
and	O
cheaper	O
than	O
CPUs	O
found	O
in	O
a	O
personal	B-Device
computer	I-Device
.	O
</s>
<s>
They	O
are	O
normally	O
fire-walled	B-Application
and	O
restricted	O
to	O
run	O
only	O
their	O
pre-installed	O
software	O
.	O
</s>
<s>
The	O
operating	O
system	O
is	O
difficult	O
to	O
change	O
and/or	O
resides	O
on	O
a	O
file	B-Application
server	I-Application
.	O
</s>
<s>
For	O
example	O
,	O
"	O
thin	B-Device
client	I-Device
"	O
machines	O
in	O
educational	O
establishments	O
may	O
be	O
reset	O
to	O
their	O
original	O
state	O
between	O
classes	O
.	O
</s>
<s>
A	O
personal	B-Device
computer	I-Device
has	O
one	O
user	O
who	O
may	O
also	O
be	O
the	O
owner	O
(	O
although	O
the	O
term	O
has	O
also	O
come	O
also	O
mean	O
any	O
computer	O
hardware	O
somewhat	O
like	O
the	O
original	O
IBM	B-Device
PC	I-Device
,	O
irrespective	O
of	O
how	O
it	O
is	O
used	O
)	O
.	O
</s>
<s>
Personal	B-Device
computers	I-Device
normally	O
store	O
personal	O
files	O
,	O
and	O
often	O
the	O
owner/user	O
is	O
responsible	O
for	O
routine	O
maintenance	O
such	O
as	O
removing	O
unwanted	O
files	O
and	O
virus-scanning	O
.	O
</s>
<s>
These	O
are	O
computers	O
where	O
different	O
people	O
might	O
log	O
on	O
at	O
different	O
times	O
;	O
unlike	O
public	O
computers	O
,	O
they	O
would	O
have	O
usernames	O
and	O
passwords	O
assigned	O
on	O
a	O
long-term	O
basis	O
,	O
with	O
the	O
files	O
they	B-General_Concept
see	I-General_Concept
and	I-General_Concept
the	I-General_Concept
computer	I-General_Concept
's	I-General_Concept
settings	I-General_Concept
adjusted	I-General_Concept
to	I-General_Concept
their	I-General_Concept
particular	I-General_Concept
account	I-General_Concept
.	O
</s>
<s>
Often	O
the	O
important	O
data	O
files	O
will	O
reside	O
on	O
a	O
central	O
file	B-Application
server	I-Application
,	O
so	O
a	O
person	O
could	O
log	O
onto	O
different	O
computers	O
yet	O
still	O
see	O
the	O
same	O
files	O
.	O
</s>
<s>
The	O
computer	O
(	O
or	O
workstation	B-Device
)	O
might	O
be	O
a	O
"	O
thin	B-Device
client	I-Device
"	O
or	O
X	B-Protocol
terminal	I-Protocol
,	O
otherwise	O
it	O
may	O
have	O
its	O
own	O
disk	O
for	O
some	O
or	O
all	O
system	O
files	O
,	O
but	O
usually	O
will	O
need	O
to	O
be	O
networked	O
to	O
the	O
rest	O
of	O
the	O
system	O
for	O
full	O
functionality	O
.	O
</s>
<s>
The	O
history	B-Architecture
of	I-Architecture
computing	I-Architecture
hardware	I-Architecture
is	O
often	O
used	O
to	O
reference	O
the	O
different	O
generations	O
of	O
computing	O
devices	O
:	O
</s>
<s>
First	B-Architecture
generation	I-Architecture
computers	I-Architecture
(	O
1940-1955	O
)	O
:	O
It	O
used	O
vacuum	O
tubes	O
such	O
as	O
the	O
6J6	O
or	O
specially	O
designed	O
tubes	O
-	O
or	O
even	O
mechanical	O
arrangements	O
,	O
and	O
were	O
relatively	O
slow	O
,	O
energy-hungry	O
and	O
the	O
earliest	B-Architecture
computers	I-Architecture
were	O
less	O
flexible	O
in	O
their	O
programmability	O
.	O
</s>
<s>
Second	B-Device
generation	I-Device
computers	I-Device
(	O
1956-1963	O
)	O
:	O
It	O
used	O
discrete	O
transistors	B-Device
,	O
and	O
so	O
were	O
smaller	O
and	O
consumed	O
less	O
power	O
.	O
</s>
<s>
Third	O
generation	O
computers	O
(	O
1964-1970	O
)	O
:	O
It	O
used	O
Integrated	O
Circuits	O
(	O
ICs	O
)	O
,	O
the	O
main	O
difference	O
between	O
hardware	O
in	O
computers	O
of	O
the	O
1960s	O
and	O
today	O
being	O
the	O
density	O
of	O
transistors	B-Device
in	O
each	O
IC	O
(	O
beginning	O
with	O
Small	O
Scale	O
Integration	O
chips	O
like	O
the	O
Transistor-transistor	B-General_Concept
logic	I-General_Concept
(	O
TTL	B-General_Concept
)	O
SN7400	O
gates	O
with	O
20	O
transistors	B-Device
,	O
through	O
Medium	O
Scale	O
Integration	O
and	O
Large	O
Scale	O
Integration	O
to	O
Very-large-scale	O
integration	O
(	O
VLSI	O
)	O
with	O
over	O
ten	O
billion	O
transistors	B-Device
in	O
a	O
single	O
silicon-based	O
IC	O
"	O
chip	O
"	O
.	O
</s>
<s>
Fourth	O
generation	O
computers( 1971	O
–	O
present	O
)	O
:	O
It	O
uses	O
Microprocessors	B-Architecture
,	O
as	O
millions	O
of	O
ICs	O
were	O
built	O
onto	O
a	O
single	O
silicon-based	O
chip	O
.	O
</s>
<s>
Since	O
then	O
form	O
factor	O
of	O
computers	O
reduced	O
,	O
task	O
processing	O
&	O
graphic	O
rendering	O
improved	O
and	O
it	O
became	O
more	O
battery-powered	O
with	O
the	O
advent	O
of	O
personal	O
mobile	B-Application
devices	I-Application
such	O
as	O
laptops	B-Device
,	O
tablets	B-Device
,	O
smartphones	B-Application
etc	O
.	O
</s>
