<s>
In	O
microelectronics	O
,	O
a	O
quad	B-Algorithm
in-line	I-Algorithm
package	I-Algorithm
(	O
QIP	O
or	O
QIL	B-Algorithm
)	O
,	O
is	O
an	O
electronic	B-Algorithm
component	I-Algorithm
package	I-Algorithm
with	O
a	O
rectangular	O
housing	O
and	O
four	O
parallel	O
rows	O
of	O
electrical	O
connecting	O
pins	O
.	O
</s>
<s>
The	O
package	O
may	O
be	O
through-hole	B-Algorithm
mounted	I-Algorithm
to	O
a	O
printed	O
circuit	O
board	O
(	O
PCB	O
)	O
or	O
inserted	O
in	O
a	O
socket	O
.	O
</s>
<s>
Rockwell	O
used	O
a	O
QIP	O
with	O
42	O
leads	O
formed	O
into	O
staggered	O
rows	O
for	O
their	O
PPS-4	B-General_Concept
microprocessor	O
family	O
introduced	O
in	O
1973	O
,	O
and	O
other	O
microprocessors	O
and	O
microcontrollers	O
,	O
some	O
with	O
higher	O
lead	O
counts	O
,	O
through	O
the	O
early	O
1990s	O
.	O
</s>
<s>
The	O
QIP	O
has	O
the	O
same	O
dimensions	O
as	O
a	O
Dual	B-Algorithm
in-line	I-Algorithm
package	I-Algorithm
(	O
DIP	B-Algorithm
)	O
,	O
but	O
the	O
leads	O
on	O
each	O
side	O
are	O
bent	O
into	O
an	O
alternating	O
zigzag	O
configuration	O
so	O
as	O
to	O
fit	O
four	O
lines	O
of	O
solder	O
pads	O
(	O
instead	O
of	O
two	O
with	O
a	O
DIP	B-Algorithm
but	O
similar	O
to	O
Zig-zag	B-Algorithm
in-line	I-Algorithm
package	I-Algorithm
)	O
.	O
</s>
<s>
This	O
may	O
seem	O
odd	O
today	O
,	O
given	O
the	O
far	O
closer	O
solder	O
pad	O
spacing	O
in	O
use	O
now	O
,	O
but	O
in	O
the	O
1970s	O
,	O
the	O
heyday	O
of	O
the	O
QIL	B-Algorithm
,	O
bridging	O
of	O
neighbouring	O
solder	O
pads	O
on	O
DIP	B-Algorithm
ICs	O
was	O
an	O
issue	O
at	O
times	O
,	O
</s>
<s>
Intel	O
and	O
3M	O
developed	O
the	O
ceramic	O
leadless	O
quad	B-Algorithm
in-line	I-Algorithm
package	I-Algorithm
(	O
QUIP	O
)	O
,	O
introduced	O
in	O
1979	O
,	O
to	O
boost	O
microprocessor	O
density	O
and	O
economy	O
.	O
</s>
<s>
It	O
was	O
used	O
by	O
Intel	O
for	O
the	O
iAPX	B-Device
432	I-Device
microprocessor	O
chip	O
set	O
,	O
and	O
by	O
Zilog	O
for	O
the	O
Z8-02	O
external-ROM	O
prototyping	O
version	O
of	O
the	O
Z8	B-Device
microcontroller	O
.	O
</s>
