<s>
The	O
FX-603P	B-Device
was	O
a	O
programmable	B-Application
calculator	I-Application
,	O
manufactured	O
by	O
Casio	O
from	O
1990	O
.	O
</s>
<s>
It	O
was	O
the	O
successor	O
model	O
to	O
the	O
Casio	B-Device
FX-602P	I-Device
.	O
</s>
<s>
The	O
FX-603P	B-Device
featured	O
a	O
two	O
line	O
dot	B-General_Concept
matrix	I-General_Concept
display	O
with	O
16	O
characters	O
each	O
as	O
main	O
display	O
.	O
</s>
<s>
The	O
FX-603P	B-Device
could	O
store	O
6,144	O
steps	O
.	O
</s>
<s>
The	O
FX-603P	B-Device
series	O
supported	O
20	O
labels	O
for	O
programs	O
and	O
subroutines	O
called	O
P0	O
..	O
P19	O
-	O
twice	O
the	O
amount	O
of	O
the	O
predecessor	O
models	O
.	O
</s>
<s>
The	O
FX-603P	B-Device
supported	O
indirect	O
addressing	O
both	O
for	O
memory	O
access	O
and	O
jumps	O
and	O
therefore	O
programming	O
model	O
could	O
be	O
considered	O
Turing	B-Algorithm
complete	I-Algorithm
.	O
</s>
<s>
The	O
FX-603P	B-Device
was	O
backward-compatible	O
with	O
the	O
FX-602P	O
could	O
load	O
FX-602P	O
programs	O
from	O
Compact	B-Device
Cassette	I-Device
.	O
</s>
<s>
The	O
FX-603P	B-Device
used	O
the	O
same	O
FA-6	B-Device
interface	O
as	O
used	O
by	O
the	O
Casio	O
FX-840P	O
,	O
Casio	O
FX-841P	O
,	O
Casio	B-Device
FX-850P	I-Device
,	O
Casio	O
FX-860P	O
,	O
Casio	O
FX-860Pvc	O
,	O
Casio	O
FX-870P	O
,	O
Casio	O
FX-880P	O
,	O
Casio	O
FX-890P	O
,	O
Casio	O
VX-1	O
,	O
Casio	O
VX-2	O
,	O
Casio	O
VX-3	O
,	O
Casio	O
VX-4	O
,	O
Casio	O
Z-1	O
and	O
Casio	O
Z-1GR	O
programmable	B-Application
calculator	I-Application
and	O
pocket	B-Device
computers	I-Device
.	O
</s>
<s>
This	O
interface	O
features	O
a	O
Kansas	B-Device
City	I-Device
standard	I-Device
Compact	B-Device
Cassette	I-Device
interface	O
,	O
a	O
Centronics	B-Device
printer	I-Device
port	I-Device
and	O
a	O
RS-232	O
interface	O
.	O
</s>
