<s>
Partner	O
)	O
is	O
an	O
IBM	O
PC-compatible	O
portable	B-Device
computer	I-Device
that	O
was	O
introduced	O
by	O
the	O
Panasonic	O
Corporation	O
in	O
1984	O
.	O
</s>
<s>
Weighing	O
roughly	O
in	O
its	O
base	O
configuration	O
,	O
the	O
computer	O
came	O
equipped	O
with	O
a	O
cathode-ray	B-Device
tube	I-Device
display	O
and	O
a	O
built-in	O
thermal	O
printer	O
.	O
</s>
<s>
Its	O
monochrome	O
,	O
green-phosphor	O
cathode-ray	B-Device
tube	I-Device
display	O
measures	O
nine	O
inches	O
diagonally	O
and	O
supports	O
the	O
CGA	B-Device
video	O
mode	O
for	O
IBM	O
PCs	O
and	O
compatibles	O
,	O
displaying	O
text	O
at	O
up	O
to	O
80	O
columns	O
by	O
25	O
rows	O
and	O
graphics	O
up	O
to	O
640	O
by	O
200	O
pixels	O
.	O
</s>
<s>
The	O
Senior	O
Partner	O
runs	O
an	O
Intel	B-Device
8088	I-Device
microprocessor	O
clocked	O
at	O
the	O
IBM-PC-standard	O
4.77MHz	O
.	O
</s>
<s>
A	O
slot	O
for	O
an	O
aftermarket	O
8087	B-Device
floating-point	O
co-processor	O
is	O
included	O
on	O
the	O
motherboard	O
.	O
</s>
<s>
The	O
computer	O
's	O
base	O
configuration	O
is	O
equipped	O
with	O
128KB	O
of	O
RAM	B-Architecture
,	O
expandable	O
to	O
256KB	O
via	O
a	O
proprietary	O
plug-in	O
expansion	O
board	O
.	O
</s>
<s>
At	O
the	O
rear	O
of	O
the	O
system	O
unit	O
is	O
an	O
RS-232	O
serial	B-Protocol
port	I-Protocol
,	O
a	O
Centronics-style	B-Device
parallel	I-Device
port	I-Device
(	O
in	O
a	O
deviation	O
from	O
the	O
IBM-PC-standard	O
DB-25	B-Protocol
parallel	O
connector	O
)	O
,	O
and	O
an	O
RGBI	O
port	O
.	O
</s>
<s>
Panasonic	O
offered	O
three	O
models	O
of	O
the	O
Senior	O
Partner	O
:	O
one	O
with	O
one	O
5.25-inch	O
floppy	O
drive	O
;	O
another	O
with	O
two	O
such	O
drives	O
;	O
and	O
the	O
last	O
with	O
one	O
5.25-inch	O
floppy	O
drive	O
and	O
one	O
10MB	O
hard	B-Device
drive	I-Device
.	O
</s>
<s>
The	O
company	O
supplied	O
all	O
units	O
with	O
MS-DOS	O
2.11	O
,	O
as	O
well	O
as	O
a	O
bundle	O
of	O
application	O
software	O
including	O
GW-BASIC	B-Language
,	O
WordStar	B-Application
,	O
VisiCalc	B-Application
,	O
pfs:File	O
,	O
pfs:Graph	O
,	O
and	O
pfs:Report	O
.	O
</s>
<s>
The	O
hard	B-Device
drive	I-Device
–	O
based	O
Super	O
Senior	O
Partner	O
was	O
unveiled	O
in	O
May	O
1984	O
,	O
to	O
be	O
available	O
in	O
August	O
that	O
year	O
.	O
</s>
<s>
In	O
July	O
1985	O
,	O
Panasonic	O
released	O
the	O
Executive	B-Device
Partner	I-Device
,	O
the	O
successor	O
to	O
the	O
Senior	O
Partner	O
that	O
also	O
features	O
a	O
built-in	O
printer	O
.	O
</s>
<s>
The	O
Executive	B-Device
Partner	I-Device
replaces	O
the	O
Senior	O
Partner	O
's	O
CRT	B-Device
display	I-Device
for	O
a	O
gas-plasma	O
one	O
and	O
adds	O
the	O
ability	O
to	O
use	O
loose-leaf	O
paper	O
in	O
its	O
printer	O
with	O
the	O
purchase	O
of	O
a	O
ink-ribbon	O
print	O
head	O
.	O
</s>
