<s>
System	B-Application
software	I-Application
is	O
software	O
designed	O
to	O
provide	O
a	O
platform	O
for	O
other	O
software	O
.	O
</s>
<s>
Examples	O
of	O
system	B-Application
software	I-Application
include	O
operating	B-General_Concept
systems	I-General_Concept
(	O
OS	O
)	O
(	O
like	O
macOS	B-Application
,	O
Linux	B-Application
,	O
Android	O
and	O
Microsoft	B-Application
Windows	I-Application
)	O
,	O
computational	O
science	O
software	O
,	O
game	O
engines	O
,	O
search	O
engines	O
,	O
industrial	O
automation	O
,	O
and	O
software	O
as	O
a	O
service	O
applications	O
.	O
</s>
<s>
Application	B-Application
software	I-Application
is	O
software	O
that	O
allows	O
users	O
to	O
do	O
user-oriented	O
tasks	O
such	O
as	O
create	O
text	O
documents	O
,	O
play	O
or	O
develop	O
games	O
,	O
create	O
presentations	O
,	O
listen	O
to	O
music	O
,	O
draw	O
pictures	O
or	O
browse	O
the	O
web	O
.	O
</s>
<s>
In	O
the	O
late	O
1940s	O
,	O
the	O
early	O
days	O
of	O
computing	O
,	O
most	O
application	B-Application
software	I-Application
was	O
custom-written	O
by	O
computer	O
users	O
to	O
fit	O
their	O
specific	O
hardware	O
and	O
requirements	O
.	O
</s>
<s>
System	B-Application
software	I-Application
was	O
usually	O
supplied	O
by	O
the	O
manufacturer	O
of	O
the	O
computer	O
hardware	O
and	O
was	O
intended	O
to	O
be	O
used	O
by	O
most	O
or	O
all	O
users	O
of	O
that	O
system	O
.	O
</s>
<s>
Many	O
operating	B-General_Concept
systems	I-General_Concept
come	O
pre-packaged	O
with	O
basic	O
application	B-Application
software	I-Application
.	O
</s>
<s>
Such	O
software	O
is	O
not	O
considered	O
system	B-Application
software	I-Application
when	O
it	O
can	O
be	O
uninstalled	O
without	O
affecting	O
the	O
functioning	O
of	O
other	O
software	O
.	O
</s>
<s>
Examples	O
of	O
such	O
software	O
are	O
games	O
and	O
simple	O
editing	O
tools	O
supplied	O
with	O
Microsoft	B-Application
Windows	I-Application
,	O
or	O
software	O
development	O
toolchains	O
supplied	O
with	O
many	O
Linux	B-Application
distributions	O
.	O
</s>
<s>
Some	O
of	O
the	O
grayer	O
areas	O
between	O
system	O
and	O
application	B-Application
software	I-Application
are	O
web	B-Application
browsers	I-Application
integrated	O
deeply	O
into	O
the	O
operating	B-General_Concept
system	I-General_Concept
such	O
as	O
Internet	B-Application
Explorer	I-Application
in	O
some	O
versions	O
of	O
Microsoft	B-Application
Windows	I-Application
,	O
or	O
ChromeOS	B-Operating_System
and	O
where	O
the	O
browser	B-Application
functions	O
as	O
the	O
only	O
user	O
interface	O
and	O
the	O
only	O
way	O
to	O
run	O
programs	O
(	O
and	O
other	O
web	B-Application
browsers	I-Application
can	O
not	O
be	O
installed	O
in	O
their	O
place	O
)	O
.	O
</s>
<s>
Cloud-based	O
software	O
is	O
another	O
example	O
of	O
systems	B-Application
software	I-Application
,	O
providing	O
services	O
to	O
a	O
software	O
client	O
(	O
usually	O
a	O
web	B-Application
browser	I-Application
or	O
a	O
JavaScript	O
application	O
running	O
in	O
the	O
web	B-Application
browser	I-Application
)	O
,	O
not	O
to	O
the	O
user	O
directly	O
.	O
</s>
<s>
It	O
is	O
developed	O
using	O
system	B-Application
programming	I-Application
methodologies	O
and	O
systems	B-Language
programming	I-Language
languages	I-Language
.	O
</s>
<s>
transferring	O
data	B-General_Concept
between	O
memory	B-Architecture
and	O
disks	B-Device
or	O
rendering	O
output	O
onto	O
a	O
display	B-Device
device	I-Device
.	O
</s>
<s>
It	O
provides	O
a	O
platform	O
(	O
hardware	B-Operating_System
abstraction	I-Operating_System
layer	I-Operating_System
)	O
to	O
run	O
high-level	O
system	B-Application
software	I-Application
and	O
application	B-Application
software	I-Application
.	O
</s>
<s>
A	O
kernel	B-Operating_System
is	O
the	O
core	O
part	O
of	O
the	O
operating	B-General_Concept
system	I-General_Concept
that	O
defines	O
an	O
API	B-Application
for	O
applications	B-Application
programs	I-Application
(	O
including	O
some	O
system	B-Application
software	I-Application
)	O
and	O
an	O
interface	O
to	O
device	B-Application
drivers	I-Application
.	O
</s>
<s>
Device	B-Application
drivers	I-Application
and	O
devices	O
firmware	O
,	O
including	O
computer	O
BIOS	B-Operating_System
,	O
provide	O
basic	O
functionality	O
to	O
operate	O
and	O
control	O
the	O
hardware	O
connected	O
to	O
or	O
built	O
into	O
the	O
computer	O
.	O
</s>
<s>
Either	O
a	O
command-line	B-Application
interface	I-Application
(	O
CLI	O
)	O
or	O
,	O
since	O
the	O
1980s	O
a	O
graphical	B-Application
user	I-Application
interface	I-Application
(	O
GUI	B-Application
)	O
.	O
</s>
<s>
This	O
is	O
the	O
part	O
of	O
the	O
operating	B-General_Concept
system	I-General_Concept
the	O
user	O
directly	O
interacts	O
with	O
,	O
it	O
is	O
considered	O
an	O
application	O
and	O
not	O
system	B-Application
software	I-Application
.	O
</s>
<s>
Some	O
organizations	O
use	O
the	O
term	O
systems	B-Application
programmer	I-Application
to	O
describe	O
a	O
job	O
function	O
that	O
is	O
more	O
accurately	O
termed	O
systems	B-Application
administrator	I-Application
.	O
</s>
<s>
Software	O
tools	O
these	O
employees	O
use	O
are	O
then	O
called	O
system	B-Application
software	I-Application
.	O
</s>
<s>
This	O
utility	B-Application
software	I-Application
helps	O
to	O
analyze	O
,	O
configure	O
,	O
optimize	O
and	O
maintain	O
the	O
computer	O
,	O
such	O
as	O
virus	O
protection	O
.	O
</s>
<s>
The	O
term	O
system	B-Application
software	I-Application
can	O
also	O
include	O
software	O
development	O
tools	O
(	O
like	O
a	O
compiler	B-Language
,	O
linker	B-Application
,	O
or	O
debugger	B-Application
)	O
.	O
</s>
