<s>
Apple	B-Device
Pencil	I-Device
is	O
a	O
line	O
of	O
wireless	O
stylus	B-Device
pen	B-Device
accessories	O
designed	O
and	O
developed	O
by	O
Apple	O
Inc	O
.	O
for	O
use	O
with	O
supported	O
iPad	B-Operating_System
tablets	B-Device
.	O
</s>
<s>
The	O
first-generation	O
Apple	B-Device
Pencil	I-Device
was	O
announced	O
alongside	O
the	O
first	B-Device
iPad	I-Device
Pro	I-Device
on	O
September	O
9	O
,	O
2015	O
.	O
</s>
<s>
It	O
communicates	O
wirelessly	O
via	O
Bluetooth	B-Protocol
and	O
has	O
a	O
removable	O
cap	O
that	O
conceals	O
a	O
Lightning	B-Architecture
connector	I-Architecture
used	O
for	O
charging	O
.	O
</s>
<s>
The	O
Pencil	B-Device
is	O
compatible	O
with	O
the	O
first	O
-	O
and	O
second-generation	B-Device
iPad	I-Device
Pro	I-Device
models	O
,	O
and	O
the	O
sixth	B-Device
through	O
tenth-generation	B-Operating_System
iPad	I-Operating_System
models	O
(	O
with	O
the	O
latter	O
requiring	O
a	O
USB-C	O
adapter	O
)	O
.	O
</s>
<s>
The	O
second-generation	O
Apple	B-Device
Pencil	I-Device
was	O
announced	O
on	O
October	O
30	O
,	O
2018	O
,	O
alongside	O
the	O
third-generation	B-Device
iPad	I-Device
Pro	I-Device
,	O
and	O
is	O
used	O
with	O
most	O
iPad	B-Operating_System
models	O
that	O
contain	O
a	O
USB-C	O
port	O
(	O
excluding	O
the	O
tenth-generation	B-Operating_System
iPad	I-Operating_System
)	O
.	O
</s>
<s>
It	O
uses	O
a	O
magnetic	O
connector	O
on	O
the	O
side	O
of	O
the	O
tablet	B-Device
for	O
charging	O
rather	O
than	O
a	O
Lightning	B-Architecture
connector	I-Architecture
,	O
and	O
includes	O
touch-sensitive	O
areas	O
that	O
can	O
be	O
tapped	O
to	O
perform	O
actions	O
within	O
supported	O
apps	O
.	O
</s>
<s>
Apple	O
has	O
promoted	O
the	O
Pencil	B-Device
as	O
being	O
oriented	O
towards	O
creative	O
work	O
and	O
productivity	O
;	O
during	O
its	O
unveiling	O
,	O
the	O
Pencil	B-Device
's	O
drawing	O
capabilities	O
were	O
demonstrated	O
using	O
the	O
mobile	O
version	O
of	O
Adobe	B-Operating_System
Photoshop	I-Operating_System
,	O
and	O
its	O
document-annotation	O
capabilities	O
were	O
shown	O
on	O
several	O
Microsoft	B-Application
Office	I-Application
apps	O
.	O
</s>
<s>
The	O
Apple	B-Device
Pencil	I-Device
has	O
pressure	O
sensitivity	O
and	O
angle	O
detection	O
,	O
and	O
it	O
was	O
designed	O
for	O
low	O
latency	O
to	O
enable	O
smooth	O
marking	O
on	O
the	O
screen	O
.	O
</s>
<s>
The	O
Pencil	B-Device
and	O
the	O
user	O
's	O
fingers	O
can	O
be	O
used	O
simultaneously	O
while	O
rejecting	O
input	O
from	O
the	O
user	O
's	O
palm	O
.	O
</s>
<s>
One	O
end	O
of	O
the	O
device	O
has	O
a	O
magnetically-fastened	O
removable	O
cap	O
which	O
covers	O
a	O
Lightning	B-Architecture
connector	I-Architecture
which	O
is	O
used	O
for	O
charging	O
from	O
an	O
iPad	B-Operating_System
's	O
Lightning	B-Architecture
port	I-Architecture
.	O
</s>
<s>
It	O
also	O
ships	O
with	O
a	O
female-to-female	O
Lightning	B-Architecture
adapter	O
that	O
allows	O
it	O
to	O
be	O
used	O
with	O
charging	O
cables	O
.	O
</s>
<s>
The	O
Apple	B-Device
Pencil	I-Device
uses	O
an	O
STMicroelectronics	O
STM32L151UCY6	O
Ultra-low-power	O
32-bit	O
RISC	B-Architecture
ARM-based	O
Cortex-M3	O
MCU	B-Architecture
running	O
at	O
32MHz	O
with	O
64KB	O
of	O
flash	O
memory	O
,	O
a	O
Bosch	O
Sensortech	O
BMA280	O
3‐axis	O
accelerometer	O
and	O
a	O
Cambridge	O
Silicon	O
Radio	O
(	O
Qualcomm	O
)	O
CSR1012A05	O
Bluetooth	B-General_Concept
Smart	I-General_Concept
IC	O
for	O
its	O
Bluetooth	B-Protocol
connection	O
to	O
the	O
iPad	B-Operating_System
.	O
</s>
<s>
The	O
first-generation	O
Apple	B-Device
Pencil	I-Device
is	O
compatible	O
with	O
iPad	B-Operating_System
models	O
with	O
a	O
Lightning	B-Architecture
port	I-Architecture
released	O
since	O
2018	O
,	O
including	O
the	O
first	O
-	O
and	O
second-generation	B-Device
iPad	I-Device
Pro	I-Device
models	O
,	O
third-generation	B-Device
iPad	I-Device
Air	I-Device
,	O
fifth-generation	B-Device
iPad	I-Device
Mini	I-Device
,	O
sixth-generation	B-Device
9.7-inch	O
iPad	B-Operating_System
,	O
and	O
the	O
seventh	B-Device
,	O
eighth	B-Device
,	O
and	O
ninth-generation	B-Device
10.2-inch	O
iPad	B-Operating_System
models	O
.	O
</s>
<s>
It	O
also	O
supports	O
the	O
tenth-generation	B-Operating_System
,	I-Operating_System
10.9-inch	I-Operating_System
iPad	I-Operating_System
released	O
in	O
2022	O
,	O
but	O
requires	O
a	O
dongle	B-Device
(	O
similar	O
to	O
the	O
aforementioned	O
Lightning	B-Architecture
adapter	O
)	O
to	O
connect	O
it	O
to	O
a	O
USB-C	O
cable	O
for	O
charging	O
.	O
</s>
<s>
Apple	O
began	O
to	O
bundle	O
this	O
dongle	B-Device
with	O
Pencil	B-Device
units	O
in	O
October	O
2022	O
,	O
and	O
it	O
can	O
be	O
purchased	O
separately	O
by	O
existing	O
owners	O
.	O
</s>
<s>
On	O
October	O
30	O
,	O
2018	O
,	O
Apple	O
announced	O
an	O
updated	O
Pencil	B-Device
alongside	O
the	O
third-generation	B-Device
iPad	I-Device
Pro	I-Device
.	O
</s>
<s>
It	O
is	O
similar	O
in	O
design	O
and	O
specifications	O
to	O
the	O
first	O
model	O
,	O
but	O
without	O
the	O
detachable	O
connector	O
,	O
and	O
part	O
of	O
the	O
stylus	B-Device
is	O
flattened	O
to	O
inhibit	O
rolling	O
.	O
</s>
<s>
The	O
sixth-generation	B-Device
iPad	I-Device
Pro	I-Device
added	O
the	O
ability	O
to	O
detect	O
the	O
position	O
and	O
angle	O
of	O
Pencil	B-Device
up	O
to	O
above	O
the	O
screen	O
.	O
</s>
<s>
Rather	O
than	O
a	O
physical	O
Lightning	B-Architecture
connector	I-Architecture
,	O
the	O
second-generation	O
Pencil	B-Device
is	O
paired	O
and	O
charged	O
using	O
a	O
proprietary	O
magnetic	O
wireless	B-Application
charging	I-Application
connector	O
on	O
the	O
tablet	B-Device
instead	O
.	O
</s>
<s>
As	O
such	O
,	O
it	O
is	O
only	O
supported	O
by	O
the	O
third	O
,	O
fourth	B-Device
,	O
fifth	B-Device
and	O
sixth-generation	B-Device
iPad	I-Device
Pro	I-Device
,	O
sixth-generation	B-Device
iPad	I-Device
Mini	I-Device
,	O
and	O
the	O
fourth	B-Device
-	I-Device
and	O
fifth-generation	B-Device
iPad	I-Device
Air	I-Device
.	I-Device
</s>
<s>
All	O
of	O
these	O
models	O
have	O
USB-C	O
connectors	O
instead	O
of	O
Lightning	B-Architecture
,	O
making	O
them	O
physically	O
incompatible	O
with	O
the	O
first-generation	O
Pencil	B-Device
.	O
</s>
