<s>
The	O
Toshiba	B-Device
T1100	I-Device
is	O
a	O
laptop	B-Device
manufactured	O
by	O
Toshiba	O
in	O
1985	O
,	O
and	O
has	O
subsequently	O
been	O
described	O
by	O
Toshiba	O
as	O
"	O
the	O
world	O
's	O
first	O
mass-market	O
laptop	B-Device
computer	I-Device
"	O
.	O
</s>
<s>
Its	O
technical	O
specifications	O
were	O
comparable	O
to	O
the	O
original	O
IBM	B-Device
PC	I-Device
desktop	O
,	O
using	O
floppy	B-Device
disks	I-Device
(	O
it	O
had	O
no	O
hard	B-Device
drive	I-Device
)	O
,	O
a	O
4.77MHz	O
Intel	B-Device
80C88	I-Device
CPU	O
(	O
a	O
lower-power	O
variation	O
of	O
the	O
Intel	B-Device
8088	I-Device
)	O
,	O
256	O
KB	O
of	O
conventional	O
RAM	O
extendable	O
to	O
512	O
KB	O
,	O
and	O
a	O
monochrome	O
LCD	O
capable	O
of	O
displaying	O
80x25	O
text	O
and	O
640x200	O
CGA	B-Device
graphics	I-Device
.	O
</s>
<s>
The	O
T1100	B-Device
PLUS	O
is	O
a	O
later	O
model	O
of	O
this	O
laptop	B-Device
,	O
released	O
to	O
the	O
market	O
in	O
1986	O
.	O
</s>
<s>
Some	O
significant	O
differences	O
to	O
the	O
T1100	B-Device
are	O
:	O
16-bit	O
data	O
bus	O
80C86	B-General_Concept
CPU	O
,	O
7.16MHz	O
or	O
4.77MHz	O
operation	O
,	O
256	O
KB	O
of	O
conventional	O
RAM	O
(	O
16-bit	O
)	O
extendable	O
to	O
640	O
KB	O
,	O
and	O
two	O
internal	O
720	O
KB	O
3.5	B-Device
"	I-Device
diskette	B-Device
drives	O
.	O
</s>
<s>
The	O
T1100	B-Device
was	O
named	O
an	O
IEEE	O
Milestone	O
in	O
2009	O
.	O
</s>
<s>
Toshiba	B-Device
T1100	I-Device
PLUS	O
was	O
cloned	O
in	O
the	O
USSR	O
as	O
Electronika	B-Device
MS	I-Device
1504	I-Device
in	O
1991	O
.	O
</s>
