<s>
The	O
PowerBook	B-Device
140	I-Device
was	O
released	O
in	O
the	O
first	O
line	O
of	O
PowerBooks	B-Device
.	O
</s>
<s>
It	O
was	O
the	O
mid-range	O
PowerBook	B-Device
,	O
between	O
the	O
low-end	O
100	B-Device
and	O
the	O
high-end	O
170	B-Device
.	O
</s>
<s>
As	O
with	O
the	O
PowerBook	B-Device
170	I-Device
,	O
and	O
unlike	O
the	O
100	B-Device
,	O
this	O
PowerBook	B-Device
featured	O
an	O
internal	O
floppy	B-Device
drive	I-Device
.	O
</s>
<s>
In	O
1992	O
,	O
it	O
was	O
replaced	O
by	O
the	O
PowerBook	B-Device
145	O
,	O
which	O
was	O
essentially	O
a	O
speed	O
bump	O
,	O
though	O
the	O
PowerBook	B-Device
160	I-Device
essentially	O
superseded	O
it	O
as	O
the	O
new	O
mid-line	O
model	O
.	O
</s>
<s>
Intended	O
as	O
a	O
replacement	O
for	O
the	O
Portable	O
,	O
the	O
140	O
series	O
was	O
identical	O
to	O
the	O
170	B-Device
,	O
though	O
it	O
compromised	O
a	O
number	O
of	O
the	O
high-end	O
model	O
's	O
features	O
to	O
make	O
it	O
a	O
more	O
affordable	O
mid-range	O
option	O
.	O
</s>
<s>
The	O
most	O
apparent	O
difference	O
was	O
that	O
the	O
140	O
used	O
a	O
cheaper	O
,	O
diagonal	O
passive	B-Device
matrix	I-Device
display	O
instead	O
of	O
the	O
sharper	O
active	B-General_Concept
matrix	I-General_Concept
version	O
used	O
on	O
the	O
170	B-Device
.	O
</s>
<s>
Internally	O
,	O
in	O
addition	O
to	O
a	O
slower	O
16MHz	O
processor	O
,	O
the	O
140	O
also	O
lacked	O
a	O
Floating	B-General_Concept
Point	I-General_Concept
Unit	I-General_Concept
(	O
FPU	O
)	O
and	O
could	O
not	O
be	O
upgraded	O
.	O
</s>
<s>
It	O
also	O
came	O
standard	O
with	O
a	O
20MB	O
hard	B-Device
drive	I-Device
compared	O
with	O
the	O
170	B-Device
's	O
40MB	O
drive	O
.	O
</s>
<s>
The	O
140	O
was	O
introduced	O
with	O
System	B-Operating_System
7.0.1	I-Operating_System
,	O
specifically	O
to	O
support	O
new	O
power	O
management	O
and	O
other	O
unique	O
hardware	O
features	O
.	O
</s>
<s>
However	O
,	O
due	O
to	O
the	O
RAM	O
prices	O
in	O
1991	O
,	O
combined	O
with	O
its	O
already	O
high	O
list	O
price	O
,	O
the	O
140	O
,	O
like	O
the	O
100	B-Device
and	O
170	B-Device
,	O
only	O
had	O
2MB	O
RAM	O
soldered	O
directly	O
onto	O
the	O
logicboard	O
,	O
which	O
critics	O
felt	O
was	O
restrictive	O
for	O
use	O
with	O
System	B-Operating_System
7	I-Operating_System
.	O
</s>
<s>
Furthermore	O
,	O
since	O
localized	O
versions	O
of	O
System	B-Operating_System
7	I-Operating_System
were	O
not	O
yet	O
available	O
worldwide	O
,	O
the	O
Japanese	O
6.0.7	B-Protocol
KanjiTalk	B-Operating_System
version	O
of	O
Apple	O
's	O
System	O
software	O
,	O
was	O
modified	O
to	O
support	O
all	O
three	O
new	O
PowerBooks	B-Device
and	O
released	O
as	O
version	O
J-6.0.7.1	O
.	O
</s>
<s>
As	O
a	O
result	O
,	O
this	O
version	O
was	O
unofficially	O
adapted	O
for	O
use	O
with	O
the	O
standard	O
6.0.7	B-Protocol
allowing	O
many	O
users	O
to	O
run	O
System	B-Protocol
6	I-Protocol
on	O
their	O
PowerBooks	B-Device
,	O
rather	O
than	O
upgrading	O
on-board	O
RAM	O
with	O
an	O
expensive	O
proprietary	O
RAM	O
card	O
(	O
a	O
2MB	O
card	O
was	O
US	O
$300	O
)	O
.	O
</s>
<s>
Though	O
released	O
at	O
the	O
same	O
time	O
as	O
the	O
PowerBook	B-Device
170	I-Device
and	O
PowerBook	B-Device
100	I-Device
,	O
both	O
the	O
140	O
and	O
170	B-Device
were	O
designed	O
entirely	O
by	O
Apple	O
,	O
while	O
the	O
100	B-Device
was	O
miniaturized	O
by	O
Sony	O
from	O
the	O
full-sized	O
Macintosh	B-Device
Portable	I-Device
.	O
</s>
<s>
As	O
a	O
result	O
,	O
the	O
140	O
represents	O
the	O
very	O
first	O
notebook	B-Device
computer	I-Device
created	O
by	O
Apple	O
,	O
with	O
the	O
100	B-Device
actually	O
representing	O
the	O
first	O
design	O
improvements	O
,	O
though	O
its	O
internal	O
architecture	O
is	O
the	O
oldest	O
in	O
the	O
series	O
.	O
</s>
<s>
The	O
PowerBook	B-Device
145	O
was	O
a	O
speed-bumped	O
140	O
,	O
increasing	O
the	O
processor	O
speed	O
from	O
16MHz	O
to	O
25MHz	O
.	O
</s>
<s>
The	O
standard	O
hard	B-Device
drive	I-Device
was	O
upgraded	O
from	O
20MB	O
to	O
40MB	O
.	O
</s>
<s>
Though	O
a	O
direct	O
descendant	O
of	O
the	O
140	O
,	O
the	O
145	O
was	O
actually	O
the	O
replacement	O
for	O
the	O
PowerBook	B-Device
100	I-Device
as	O
the	O
low-end	O
model	O
,	O
the	O
140	O
having	O
been	O
superseded	O
by	O
the	O
new	O
mid-level	O
PowerBook	B-Device
160	I-Device
.	O
</s>
<s>
It	O
was	O
replaced	O
by	O
the	O
PowerBook	B-Device
145B	O
in	O
June	O
1993	O
.	O
</s>
<s>
The	O
PowerBook	B-Device
145B	O
was	O
the	O
same	O
as	O
the	O
PowerBook	B-Device
145	O
that	O
came	O
before	O
it	O
,	O
but	O
with	O
a	O
lower	O
price	O
and	O
additional	O
2MB	O
of	O
RAM	O
soldered	O
to	O
the	O
motherboard	O
.	O
</s>
<s>
Unlike	O
previous	O
Mac	O
models	O
but	O
like	O
the	O
Performas	B-Device
,	O
the	O
145B	O
did	O
not	O
ship	O
with	O
a	O
full	O
set	O
of	O
system	O
disks	O
.	O
</s>
<s>
System	B-Operating_System
7.1	I-Operating_System
was	O
preinstalled	O
on	O
the	O
internal	O
hard	B-Device
disk	I-Device
,	O
and	O
a	O
single	O
system	O
startup	O
disk	O
was	O
included	O
.	O
</s>
<s>
The	O
145	O
was	O
superseded	O
by	O
the	O
PowerBook	B-Device
150	I-Device
as	O
the	O
next	O
low-end	O
PowerBook	B-Device
.	O
</s>
