<s>
Some	O
models	O
are	O
a	O
programmable	B-Application
.	O
</s>
<s>
The	O
entry-level	O
was	O
the	O
HP-31E	O
and	O
32E	O
,	O
that	O
were	O
not	O
programmable	B-Application
;	O
but	O
even	O
the	O
31E	O
provided	O
a	O
Self-check	O
.	O
</s>
<s>
The	O
HP-33E/C	B-Device
(	O
49	O
steps	O
plus	O
subroutines	O
)	O
and	O
HP-34C	B-Device
(	O
70	O
steps	O
)	O
and	O
38E/C	O
(	O
99	O
steps	O
)	O
are	O
programmable	B-Application
,	O
the	O
C-models	O
have	O
a	O
permanent	O
memory	O
.	O
</s>
