<s>
The	O
Compact	B-Device
Computer	I-Device
40	I-Device
or	O
CC-40	B-Device
is	O
a	O
portable	B-Device
computer	I-Device
developed	O
by	O
Texas	O
Instruments	O
.	O
</s>
<s>
The	O
CC-40	B-Device
has	O
a	O
single-line	O
31	O
character	O
LCD	B-Device
display	I-Device
,	O
weighs	O
,	O
and	O
is	O
powered	O
by	O
an	O
AC	O
adapter	O
or	O
can	O
operate	O
for	O
200	O
hours	O
on	O
four	O
AA	B-Algorithm
batteries	I-Algorithm
.	O
</s>
<s>
The	O
CC-40	B-Device
lacks	O
a	O
way	O
to	O
store	O
data	O
more	O
permanently	O
.	O
</s>
<s>
The	O
BASIC	O
interpreter	O
is	O
similar	O
but	O
not	O
identical	O
to	O
that	O
of	O
the	O
TI-99/4A	B-Device
.	O
</s>
<s>
The	O
CC-40	B-Device
uses	O
TI	O
's	O
TMS70C20	O
CPU	O
,	O
an	O
8-bit	O
microprocessor	B-Architecture
that	O
runs	O
at	O
2.5MHz	O
.	O
</s>
<s>
The	O
system	O
has	O
6	O
kilobytes	O
of	O
Random	B-Architecture
Access	I-Architecture
Memory	I-Architecture
(	O
expandable	O
to	O
18	O
KB	O
)	O
,	O
and	O
34	O
KB	O
of	O
Read	B-Device
Only	I-Device
Memory	I-Device
.	O
</s>
<s>
A	O
licensed	O
version	O
of	O
the	O
Exatron	B-Device
Stringy	I-Device
Floppy	I-Device
as	O
a	O
digital	O
"	O
wafertape	O
"	O
unit	O
depicted	O
on	O
the	O
computer	O
's	O
box	O
was	O
only	O
released	O
as	O
a	O
prototype	O
,	O
reportedly	O
because	O
it	O
proved	O
too	O
unreliable	O
.	O
</s>
<s>
The	O
Compact	B-Device
Computer	I-Device
40	I-Device
was	O
developed	O
under	O
the	O
internal	O
codename	O
"	O
Lonestar	O
"	O
.	O
</s>
<s>
BYTE	B-Application
heavily	O
criticized	O
the	O
CC-40	B-Device
,	O
noting	O
that	O
"	O
there	O
's	O
no	O
clock	O
.	O
</s>
<s>
Only	O
one	O
BASIC	O
program	O
at	O
a	O
time	O
can	O
reside	O
in	O
memory	O
,	O
and	O
the	O
user	O
can	O
only	O
work	O
with	O
about	O
5200	O
bytes	B-Application
of	O
that	O
.	O
</s>
<s>
The	O
review	O
suggested	O
that	O
the	O
computer	O
should	O
be	O
considered	O
a	O
"	O
dandy	O
scientific	O
calculator	O
"	O
since	O
good	O
programmable	O
calculators	O
cost	O
about	O
the	O
same	O
as	O
the	O
CC-40	B-Device
'	O
s	O
price	O
,	O
but	O
that	O
otherwise	O
"	O
virtually	O
all	O
of	O
its	O
competition	O
vastly	O
outstrips	O
it	O
in	O
power	O
and	O
features	O
"	O
,	O
including	O
the	O
TI-99/4A	B-Device
.	O
</s>
<s>
In	O
a	O
review	O
for	O
Creative	B-General_Concept
Computing	I-General_Concept
,	O
Joe	O
Devlin	O
wrote	O
,	O
"	O
The	O
permanent	O
memory	O
and	O
powerful	O
Basic	O
exceed	O
the	O
capabilities	O
found	O
in	O
most	O
hand-held	O
computers.	O
"	O
</s>
<s>
In	O
1983	O
,	O
MicroKids	O
magazine	O
included	O
the	O
CC-40	B-Device
on	O
a	O
list	O
of	O
"	O
Top	O
10	O
Great	O
Gift	O
Ideas.	O
"	O
</s>
<s>
The	O
Hex-Bus	O
interface	O
was	O
also	O
available	O
for	O
the	O
TI-99/4A	B-Device
as	O
an	O
unreleased	O
prototype	O
expansion	O
peripheral	O
.	O
</s>
<s>
It	O
was	O
built	O
into	O
the	O
prototypes	O
of	O
the	O
cancelled	O
TI-99/2	O
and	O
TI-99/8	O
computers	O
.	O
</s>
<s>
An	O
improved	O
model	O
,	O
the	O
CC-40	B-Device
Plus	O
,	O
was	O
in	O
the	O
final	O
stages	O
of	O
development	O
and	O
included	O
a	O
cassette	O
port	O
.	O
</s>
<s>
The	O
project	O
was	O
canceled	O
when	O
Texas	O
Instruments	O
discontinued	O
the	O
99/4A	B-Device
and	O
exited	O
the	O
home	O
computer	O
market	O
.	O
</s>
<s>
Most	O
of	O
the	O
architecture	O
of	O
the	O
CC-40	B-Device
Plus	O
was	O
reused	O
in	O
the	O
Texas	B-Device
Instruments	I-Device
TI-74	I-Device
.	O
</s>
<s>
The	O
TI-74	B-Device
changed	O
the	O
physical	O
footprint	O
of	O
the	O
Hexbus	O
port	O
and	O
rename	O
it	O
Dockbus	O
.	O
</s>
<s>
Old	O
Hexbus	O
peripherals	O
could	O
even	O
be	O
used	O
on	O
the	O
TI-74	B-Device
.	O
</s>
<s>
The	O
CC-70	O
was	O
to	O
have	O
four	O
cartridge	O
ports	O
,	O
more	O
RAM	B-Architecture
,	O
and	O
an	O
8	O
x	O
80	O
display	O
with	O
graphics	O
capability	O
.	O
</s>
