<s>
The	O
HP-HIL	B-Device
(	O
Hewlett-Packard	O
Human	O
Interface	O
Link	O
)	O
is	O
the	O
name	O
of	O
a	O
computer	B-General_Concept
bus	I-General_Concept
used	O
by	O
Hewlett-Packard	O
to	O
connect	O
keyboards	O
,	O
mice	O
,	O
trackballs	O
,	O
digitizers	O
,	O
tablets	O
,	O
barcode	O
readers	O
,	O
rotary	O
knobs	O
,	O
touchscreens	O
,	O
and	O
other	O
human	O
interface	O
peripherals	O
to	O
their	O
HP	B-Device
9000	I-Device
workstations	O
.	O
</s>
<s>
The	O
bus	O
was	O
in	O
use	O
until	O
the	O
mid-1990s	O
,	O
when	O
HP	O
substituted	O
PS/2	B-Protocol
technology	O
for	O
HIL	O
.	O
</s>
<s>
The	O
PS/2	B-Protocol
peripherals	O
were	O
themselves	O
replaced	O
with	O
USB-connected	O
models	O
.	O
</s>
<s>
The	O
HIL	B-Device
bus	I-Device
is	O
a	O
daisy-chain	B-Application
of	O
up	O
to	O
7	O
devices	O
,	O
running	O
at	O
a	O
raw	O
clock	O
speed	O
of	O
8MHz	O
.	O
</s>
<s>
HIL	O
buses	O
can	O
be	O
found	O
on	O
HP	B-Device
PA-RISC	I-Device
and	O
m68k	B-Device
based	O
machines	O
,	O
some	O
early	O
HP	B-Device
Vectra	I-Device
computers	O
,	O
as	O
well	O
as	O
in	O
some	O
HP/Agilent	O
Logic	O
Analyzers	O
.	O
</s>
<s>
HP-UX	B-Application
,	O
OpenBSD	B-Operating_System
,	O
Linux	B-Application
and	O
NetBSD	B-Device
include	O
drivers	O
for	O
the	O
HIL	B-Device
bus	I-Device
and	O
HIL	O
devices	O
.	O
</s>
<s>
The	O
HP-HIL	B-Device
bus	O
uses	O
specific	O
4-pin	O
,	O
6-pin	O
,	O
or	O
8-pin	O
SDL	B-Protocol
connectors	I-Protocol
,	O
somewhat	O
similar	O
to	O
the	O
8P8C	O
8-pin	O
modular	B-Architecture
connector	I-Architecture
commonly	O
(	O
though	O
incorrectly	O
)	O
called	O
the	O
RJ-45	B-Protocol
.	O
</s>
<s>
The	O
bus	O
can	O
reportedly	O
also	O
use	O
a	O
9-pin	O
D-subminiature	B-Protocol
DE-9	B-Protocol
connector	I-Protocol
.	O
</s>
<s>
A	O
HIL	O
to	O
PS/2	B-Protocol
converter	O
is	O
available	O
,	O
namely	O
the	O
HP	O
A4220-62001	O
.	O
</s>
