<s>
The	O
IBM	B-Device
ThinkPad	I-Device
500	I-Device
is	O
a	O
subnotebook	B-Device
from	O
the	O
ThinkPad	B-Operating_System
series	O
released	O
by	O
IBM	O
in	O
1993	O
.	O
</s>
<s>
The	O
ThinkPad	B-Device
500	I-Device
was	O
announced	O
on	O
16	O
June	O
1993	O
.	O
</s>
<s>
It	O
was	O
the	O
first	O
subnotebook	B-Device
by	O
IBM	O
.	O
</s>
<s>
It	O
was	O
announced	O
at	O
the	O
same	O
time	O
as	O
the	O
IBM	B-Device
ThinkPad	I-Device
350	I-Device
.	O
</s>
<s>
InfoWorld	O
regarded	O
the	O
ThinkPad	B-Device
500	I-Device
as	O
a	O
bit	O
too	O
small	O
for	O
comfort	O
.	O
</s>
<s>
PC	O
World	O
awarded	O
the	O
ThinkPad	B-Device
500	I-Device
the	O
"	O
Best	O
Buy	O
-	O
#1	O
Value	O
Mobile	O
PC	O
"	O
in	O
September	O
1994	O
.	O
</s>
<s>
In	O
March	O
1994	O
the	O
ThinkPad	B-Operating_System
510	O
was	O
announced	O
,	O
which	O
contains	O
the	O
486	O
DLC	O
by	O
IBM	O
and	O
a	O
7.7	O
"	O
display	O
.	O
</s>
