<s>
The	O
Data	B-Protocol
Recall	I-Protocol
Diamond	I-Protocol
One	O
was	O
a	O
word	B-General_Concept
processing	I-General_Concept
typewriter	O
,	O
designed	O
and	O
built	O
by	O
Data	O
Recall	O
Ltd	O
at	O
Dorking	O
,	O
Surrey	O
,	O
England	O
in	O
the	O
late	O
1970s	O
and	O
early	O
1980s	O
.	O
</s>
<s>
The	O
machine	O
drove	O
a	O
diablo	O
1355	O
daisy	O
wheel	O
printer	O
via	O
a	O
parallel	B-Device
interface	I-Device
at	O
3555	O
characters	O
per	O
second	O
,	O
and	O
used	O
an	O
8-inch	B-Device
floppy	I-Device
disc	O
drive	O
capable	O
of	O
holding	O
250,000	O
characters	O
.	O
</s>
<s>
Later	O
models	O
included	O
the	O
Diamond	B-Protocol
III	I-Protocol
,	O
the	O
Diamond	B-Protocol
Five	I-Protocol
(	O
a.k.a.	O
</s>
<s>
Diamond	B-Protocol
V	I-Protocol
)	O
,	O
and	O
the	O
Diamond	B-Protocol
7	I-Protocol
.	O
</s>
<s>
One	O
of	O
the	O
names	O
suggested	O
for	O
the	O
Amstrad	B-Device
PCW	I-Device
was	O
the	O
Zircon	O
,	O
on	O
the	O
grounds	O
that	O
zircon	O
was	O
"	O
a	O
Diamond	O
substitute	O
"	O
.	O
</s>
