<s>
In	O
computing	O
,	O
a	O
class	B-Application
driver	I-Application
is	O
a	O
type	O
of	O
hardware	O
device	B-Application
driver	I-Application
that	O
can	O
operate	O
a	O
large	O
number	O
of	O
different	O
devices	O
of	O
a	O
broadly	O
similar	O
type	O
.	O
</s>
<s>
Class	B-Application
drivers	I-Application
are	O
very	O
often	O
used	O
with	O
USB	B-Protocol
based	O
devices	O
,	O
which	O
share	O
the	O
essential	O
USB	B-Protocol
protocol	O
in	O
common	O
,	O
and	O
devices	O
with	O
similar	O
functionality	O
can	O
easily	O
adopt	O
common	O
protocols	O
.	O
</s>
<s>
Instead	O
of	O
having	O
a	O
separate	O
driver	O
for	O
every	O
kind	O
of	O
CD-ROM	B-Device
device	O
,	O
a	O
class	B-Application
driver	I-Application
can	O
operate	O
a	O
wide	O
variety	O
of	O
CD-ROMs	B-Device
from	O
different	O
manufacturers	O
.	O
</s>
<s>
In	O
technical	O
terms	O
,	O
a	O
class	B-Application
driver	I-Application
is	O
used	O
as	O
a	O
base	O
or	O
ancestor	O
class	O
for	O
specific	O
drivers	O
which	O
need	O
to	O
have	O
slightly	O
different	O
or	O
extended	O
functionality	O
,	O
but	O
which	O
can	O
take	O
advantage	O
of	O
the	O
majority	O
of	O
the	O
functionality	O
provided	O
by	O
the	O
class	B-Application
driver	I-Application
.	O
</s>
<s>
This	O
concept	O
is	O
a	O
key	O
aspect	O
of	O
object	B-Language
oriented	I-Language
programming	I-Language
,	O
which	O
when	O
extended	O
to	O
drivers	O
makes	O
it	O
much	O
easier	O
for	O
hardware	O
vendors	O
to	O
provide	O
driver	O
support	O
for	O
their	O
products	O
.	O
</s>
