<s>
The	O
Cray-1	B-Device
was	O
a	O
supercomputer	B-Architecture
designed	O
,	O
manufactured	O
and	O
marketed	O
by	O
Cray	O
Research	O
.	O
</s>
<s>
Announced	O
in	O
1975	O
,	O
the	O
first	O
Cray-1	B-Device
system	O
was	O
installed	O
at	O
Los	O
Alamos	O
National	O
Laboratory	O
in	O
1976	O
.	O
</s>
<s>
Eventually	O
,	O
80	O
Cray-1s	B-Device
were	O
sold	O
,	O
making	O
it	O
one	O
of	O
the	O
most	O
successful	O
supercomputers	B-Architecture
in	O
history	O
.	O
</s>
<s>
The	O
Cray-1	B-Device
was	O
the	O
first	O
supercomputer	B-Architecture
to	O
successfully	O
implement	O
the	O
vector	B-Operating_System
processor	I-Operating_System
design	O
.	O
</s>
<s>
These	O
systems	O
improve	O
the	O
performance	O
of	O
math	O
operations	O
by	O
arranging	O
memory	O
and	O
registers	B-General_Concept
to	O
quickly	O
perform	O
a	O
single	O
operation	O
on	O
a	O
large	O
set	O
of	O
data	O
.	O
</s>
<s>
Previous	O
systems	O
like	O
the	O
CDC	B-Device
STAR-100	I-Device
and	O
ASC	B-Device
had	O
implemented	O
these	O
concepts	O
but	O
did	O
so	O
in	O
a	O
way	O
that	O
seriously	O
limited	O
their	O
performance	O
.	O
</s>
<s>
The	O
Cray-1	B-Device
addressed	O
these	O
problems	O
and	O
produced	O
a	O
machine	O
that	O
ran	O
several	O
times	O
faster	O
than	O
any	O
similar	O
design	O
.	O
</s>
<s>
The	O
Cray-1	B-Device
'	O
s	O
architect	O
was	O
Seymour	O
Cray	O
;	O
the	O
chief	O
engineer	O
was	O
Cray	O
Research	O
co-founder	O
Lester	O
Davis	O
.	O
</s>
<s>
From	O
1968	O
to	O
1972	O
,	O
Seymour	O
Cray	O
of	O
Control	O
Data	O
Corporation	O
(	O
CDC	O
)	O
worked	O
on	O
the	O
CDC	B-Device
8600	I-Device
,	O
the	O
successor	O
to	O
his	O
earlier	O
CDC	B-Device
6600	I-Device
and	O
CDC	B-Device
7600	I-Device
designs	O
.	O
</s>
<s>
The	O
8600	O
was	O
essentially	O
made	O
up	O
of	O
four	O
7600s	O
in	O
a	O
box	O
with	O
an	O
additional	O
special	O
mode	O
that	O
allowed	O
them	O
to	O
operate	O
lock-step	B-General_Concept
in	O
a	O
SIMD	B-Device
fashion	O
.	O
</s>
<s>
Jim	O
Thornton	O
,	O
formerly	O
Cray	O
's	O
engineering	O
partner	O
on	O
earlier	O
designs	O
,	O
had	O
started	O
a	O
more	O
radical	O
project	O
known	O
as	O
the	O
CDC	B-Device
STAR-100	I-Device
.	O
</s>
<s>
The	O
main	O
processor	O
of	O
the	O
STAR	O
had	O
lower	O
performance	O
than	O
the	O
7600	O
,	O
but	O
added	O
hardware	O
and	O
instructions	O
to	O
speed	O
up	O
particularly	O
common	O
supercomputer	B-Architecture
tasks	O
.	O
</s>
<s>
At	O
first	O
,	O
the	O
concept	O
of	O
building	O
another	O
supercomputer	B-Architecture
seemed	O
impossible	O
,	O
but	O
after	O
Cray	O
Research	O
's	O
Chief	O
Technology	O
Officer	O
travelled	O
to	O
Wall	B-Application
Street	I-Application
and	O
found	O
a	O
lineup	O
of	O
investors	O
willing	O
to	O
back	O
Cray	O
,	O
all	O
that	O
was	O
needed	O
was	O
a	O
design	O
.	O
</s>
<s>
In	O
1975	O
the	O
80MHz	O
Cray-1	B-Device
was	O
announced	O
.	O
</s>
<s>
The	O
company	O
expected	O
to	O
sell	O
perhaps	O
a	O
dozen	O
of	O
the	O
machines	O
,	O
and	O
set	O
the	O
selling	O
price	O
accordingly	O
,	O
but	O
ultimately	O
over	O
80	O
Cray-1s	B-Device
of	O
all	O
types	O
were	O
sold	O
,	O
priced	O
from	O
$5M	O
to	O
$8M	O
.	O
</s>
<s>
The	O
machine	O
made	O
Seymour	O
Cray	O
a	O
celebrity	O
and	O
his	O
company	O
a	O
success	O
,	O
lasting	O
until	O
the	O
supercomputer	B-Architecture
crash	O
in	O
the	O
early	O
1990s	O
.	O
</s>
<s>
Based	O
on	O
a	O
recommendation	O
by	O
William	O
Perry	O
's	O
study	O
,	O
the	O
NSA	O
purchased	O
a	O
Cray-1	B-Device
for	O
theoretical	O
research	O
in	O
cryptanalysis	O
.	O
</s>
<s>
The	O
160MFLOPS	O
Cray-1	B-Device
was	O
succeeded	O
in	O
1982	O
by	O
the	O
800MFLOPS	O
Cray	B-Device
X-MP	I-Device
,	O
the	O
first	O
Cray	O
multi-processing	O
computer	O
.	O
</s>
<s>
In	O
1985	O
,	O
the	O
very	O
advanced	O
Cray-2	B-Device
,	O
capable	O
of	O
1.9GFLOPS	O
peak	O
performance	O
,	O
succeeded	O
the	O
first	O
two	O
models	O
but	O
met	O
a	O
somewhat	O
limited	O
commercial	O
success	O
because	O
of	O
certain	O
problems	O
at	O
producing	O
sustained	O
performance	O
in	O
real-world	O
applications	O
.	O
</s>
<s>
A	O
more	O
conservatively	O
designed	O
evolutionary	O
successor	O
of	O
the	O
Cray-1	B-Device
and	O
X-MP	O
models	O
was	O
therefore	O
made	O
by	O
the	O
name	O
Cray	B-Device
Y-MP	I-Device
and	O
launched	O
in	O
1988	O
.	O
</s>
<s>
By	O
comparison	O
,	O
the	O
processor	O
in	O
a	O
typical	O
2013	O
smart	O
device	O
,	O
such	O
as	O
a	O
Google	B-Device
Nexus	I-Device
10	I-Device
or	O
HTC	B-Application
One	I-Application
,	O
performs	O
at	O
roughly	O
1	O
GFLOPS	O
,	O
while	O
the	O
A13	B-Device
processor	I-Device
in	O
a	O
2020	O
iPhone	B-Operating_System
11	I-Operating_System
performs	O
at	O
154.9	O
GFLOPS	O
,	O
a	O
mark	O
supercomputers	B-Architecture
succeeding	O
the	O
Cray-1	B-Device
would	O
not	O
reach	O
until	O
1994	O
.	O
</s>
<s>
Internally	O
,	O
the	O
CPU	B-General_Concept
of	O
the	O
computer	O
is	O
built	O
up	O
from	O
a	O
number	O
of	O
separate	O
parts	O
dedicated	O
to	O
a	O
single	O
task	O
,	O
for	O
instance	O
,	O
adding	O
a	O
number	O
,	O
or	O
fetching	O
from	O
memory	O
.	O
</s>
<s>
The	O
addition	O
of	O
an	O
instruction	B-General_Concept
pipeline	I-General_Concept
changes	O
this	O
.	O
</s>
<s>
In	O
such	O
machines	O
the	O
CPU	B-General_Concept
will	O
"	O
look	O
ahead	O
"	O
and	O
begin	O
fetching	O
succeeding	O
instructions	O
while	O
the	O
current	O
instruction	O
is	O
still	O
being	O
processed	O
.	O
</s>
<s>
Vector	B-Operating_System
processors	I-Operating_System
use	O
this	O
technique	O
with	O
one	O
additional	O
trick	O
.	O
</s>
<s>
This	O
allowed	O
the	O
STAR	O
to	O
use	O
vectors	O
of	O
length	O
not	O
limited	O
by	O
the	O
length	O
of	O
registers	B-General_Concept
,	O
making	O
it	O
highly	O
flexible	O
.	O
</s>
<s>
The	O
result	O
was	O
rather	O
disappointing	O
real-world	O
performance	O
,	O
something	O
that	O
could	O
,	O
perhaps	O
,	O
have	O
been	O
forecast	O
by	O
Amdahl	B-Operating_System
's	I-Operating_System
law	I-Operating_System
.	O
</s>
<s>
He	O
decided	O
that	O
in	O
addition	O
to	O
fast	O
vector	B-Operating_System
processing	I-Operating_System
,	O
his	O
design	O
would	O
also	O
require	O
excellent	O
all-around	O
scalar	O
performance	O
.	O
</s>
<s>
Additionally	O
he	O
noticed	O
that	O
the	O
workloads	O
could	O
be	O
dramatically	O
improved	O
in	O
most	O
cases	O
through	O
the	O
use	O
of	O
registers	B-General_Concept
.	O
</s>
<s>
Whereas	O
the	O
STAR	O
would	O
read	O
and	O
process	O
the	O
same	O
memory	O
five	O
times	O
to	O
apply	O
five	O
vector	O
operations	O
on	O
a	O
set	O
of	O
data	O
,	O
it	O
would	O
be	O
much	O
faster	O
to	O
read	O
the	O
data	O
into	O
the	O
CPU	B-General_Concept
's	O
registers	B-General_Concept
once	O
,	O
and	O
then	O
apply	O
the	O
five	O
operations	O
.	O
</s>
<s>
Registers	B-General_Concept
were	O
significantly	O
more	O
expensive	O
in	O
terms	O
of	O
circuitry	O
,	O
so	O
only	O
a	O
limited	O
number	O
could	O
be	O
provided	O
.	O
</s>
<s>
Instead	O
of	O
reading	O
any	O
sized	O
vector	O
several	O
times	O
as	O
in	O
the	O
STAR	O
,	O
the	O
Cray-1	B-Device
would	O
have	O
to	O
read	O
only	O
a	O
portion	O
of	O
the	O
vector	O
at	O
a	O
time	O
,	O
but	O
it	O
could	O
then	O
run	O
several	O
operations	O
on	O
that	O
data	O
prior	O
to	O
writing	O
the	O
results	O
back	O
to	O
memory	O
.	O
</s>
<s>
Since	O
the	O
typical	O
vector	O
operation	O
would	O
involve	O
loading	O
a	O
small	O
set	O
of	O
data	O
into	O
the	O
vector	O
registers	B-General_Concept
and	O
then	O
running	O
several	O
operations	O
on	O
it	O
,	O
the	O
vector	O
system	O
of	O
the	O
new	O
design	O
had	O
its	O
own	O
separate	O
pipeline	O
.	O
</s>
<s>
The	O
Cray-1	B-Device
used	O
only	O
four	O
different	O
IC	O
types	O
,	O
an	O
ECL	B-General_Concept
dual	O
5-4	O
NOR	O
gate	O
(	O
one	O
5-input	O
,	O
and	O
one	O
4-input	O
,	O
each	O
with	O
differential	O
output	O
)	O
,	O
another	O
slower	O
MECL	B-General_Concept
10K	O
5-4	O
NOR	O
gate	O
used	O
for	O
address	O
fanout	O
,	O
a	O
16×	O
4-bit	O
high	O
speed	O
(	O
6ns	O
)	O
static	B-Architecture
RAM	I-Architecture
(	O
SRAM	O
)	O
used	O
for	O
registers	B-General_Concept
and	O
a	O
1,024	O
×	O
1-bit	O
48ns	O
SRAM	O
used	O
for	O
the	O
main	O
memory	O
.	O
</s>
<s>
In	O
all	O
,	O
the	O
Cray-1	B-Device
contained	O
about	O
200,000	O
gates	O
.	O
</s>
<s>
Each	O
signal	O
produced	O
by	O
the	O
ECL	B-General_Concept
circuitry	O
was	O
a	O
differential	O
pair	O
,	O
so	O
the	O
signals	O
were	O
balanced	O
.	O
</s>
<s>
The	O
high-performance	O
ECL	B-General_Concept
circuitry	O
generated	O
considerable	O
heat	O
,	O
and	O
Cray	O
's	O
designers	O
spent	O
as	O
much	O
effort	O
on	O
the	O
design	O
of	O
the	O
refrigeration	O
system	O
as	O
they	O
did	O
on	O
the	O
rest	O
of	O
the	O
mechanical	O
design	O
.	O
</s>
<s>
The	O
first	O
Cray-1	B-Device
was	O
delayed	O
six	O
months	O
due	O
to	O
problems	O
in	O
the	O
cooling	O
system	O
;	O
lubricant	O
that	O
is	O
normally	O
mixed	O
with	O
the	O
Freon	O
to	O
keep	O
the	O
compressor	O
running	O
would	O
leak	O
through	O
the	O
seals	O
and	O
eventually	O
coat	O
the	O
boards	O
with	O
oil	O
until	O
they	O
shorted	O
out	O
.	O
</s>
<s>
This	O
allowed	O
the	O
cycle	O
time	O
to	O
be	O
decreased	O
to	O
12.5ns	O
(	O
80MHz	O
)	O
,	O
not	O
as	O
fast	O
as	O
the	O
8ns	O
8600	O
he	O
had	O
given	O
up	O
on	O
,	O
but	O
fast	O
enough	O
to	O
beat	O
CDC	B-Device
7600	I-Device
and	O
the	O
STAR	O
.	O
</s>
<s>
NCAR	O
estimated	O
that	O
the	O
overall	O
throughput	O
on	O
the	O
system	O
was	O
4.5	O
times	O
that	O
of	O
the	O
CDC	B-Device
7600	I-Device
.	O
</s>
<s>
The	O
Cray-1	B-Device
was	O
built	O
as	O
a	O
64-bit	B-Device
system	O
,	O
a	O
departure	O
from	O
the	O
7600/6600	O
,	O
which	O
were	O
60-bit	O
machines	O
(	O
a	O
change	O
was	O
also	O
planned	O
for	O
the	O
8600	O
)	O
.	O
</s>
<s>
Addressing	O
was	O
24-bit	O
,	O
with	O
a	O
maximum	O
of	O
1,048,576	O
64-bit	B-Device
words	O
(	O
1	O
megaword	O
)	O
of	O
main	O
memory	O
,	O
where	O
each	O
word	O
also	O
had	O
eight	O
parity	O
bits	O
for	O
a	O
total	O
of	O
72	O
bits	O
per	O
word	O
.	O
</s>
<s>
Memory	O
was	O
spread	O
across	O
16	O
interleaved	B-General_Concept
memory	I-General_Concept
banks	O
,	O
each	O
with	O
a	O
50ns	O
cycle	O
time	O
,	O
allowing	O
up	O
to	O
four	O
words	O
to	O
be	O
read	O
per	O
cycle	O
.	O
</s>
<s>
The	O
main	O
register	O
set	O
consisted	O
of	O
eight	O
64-bit	B-Device
scalar	O
(	O
S	O
)	O
registers	B-General_Concept
and	O
eight	O
24-bit	O
address	O
(	O
A	O
)	O
registers	B-General_Concept
.	O
</s>
<s>
These	O
were	O
backed	O
by	O
a	O
set	O
of	O
sixty-four	O
registers	B-General_Concept
each	O
for	O
S	O
and	O
A	O
temporary	O
storage	O
known	O
as	O
T	O
and	O
B	O
respectively	O
,	O
which	O
could	O
not	O
be	O
seen	O
by	O
the	O
functional	O
units	O
.	O
</s>
<s>
The	O
vector	O
system	O
added	O
another	O
eight	O
64-element	O
by	O
64-bit	B-Device
vector	O
(	O
V	O
)	O
registers	B-General_Concept
,	O
as	O
well	O
as	O
a	O
vector	O
length	O
(	O
VL	O
)	O
and	O
vector	O
mask	O
(	O
VM	O
)	O
.	O
</s>
<s>
Finally	O
,	O
the	O
system	O
also	O
included	O
a	O
64-bit	B-Device
real-time	O
clock	O
register	O
and	O
four	O
64-bit	B-Device
instruction	O
buffers	O
that	O
held	O
sixty-four	O
16-bit	O
instructions	O
each	O
.	O
</s>
<s>
The	O
hardware	O
was	O
set	O
up	O
to	O
allow	O
the	O
vector	O
registers	B-General_Concept
to	O
be	O
fed	O
at	O
one	O
word	O
per	O
cycle	O
,	O
while	O
the	O
address	O
and	O
scalar	O
registers	B-General_Concept
required	O
two	O
cycles	O
.	O
</s>
<s>
The	O
Cray-1	B-Device
had	O
twelve	O
pipelined	O
functional	O
units	O
.	O
</s>
<s>
Since	O
the	O
machine	O
was	O
designed	O
to	O
operate	O
on	O
large	O
data	O
sets	O
,	O
the	O
design	O
also	O
dedicated	O
considerable	O
circuitry	O
to	O
I/O	B-General_Concept
.	O
</s>
<s>
Instead	O
the	O
Cray-1	B-Device
included	O
four	O
six-channel	O
controllers	O
,	O
each	O
of	O
which	O
was	O
given	O
access	O
to	O
main	O
memory	O
once	O
every	O
four	O
cycles	O
.	O
</s>
<s>
A	O
Data	O
General	O
SuperNova	B-Device
S/200	I-Device
minicomputer	O
served	O
as	O
the	O
maintenance	O
control	O
unit	O
(	O
MCU	O
)	O
,	O
which	O
was	O
used	O
to	O
feed	O
the	O
Cray	B-Operating_System
Operating	I-Operating_System
System	I-Operating_System
into	O
the	O
system	O
at	O
boot	O
time	O
,	O
to	O
monitor	O
the	O
CPU	B-General_Concept
during	O
use	O
,	O
and	O
optionally	O
as	O
a	O
front-end	O
computer	O
.	O
</s>
<s>
Most	O
,	O
if	O
not	O
all	O
,	O
Cray-1As	O
were	O
delivered	O
using	O
the	O
follow-on	O
Data	B-Device
General	I-Device
Eclipse	I-Device
as	O
the	O
MCU	O
.	O
</s>
<s>
The	O
Cray-1S	B-Device
,	O
announced	O
in	O
1979	O
,	O
was	O
an	O
improved	O
Cray-1	B-Device
that	O
supported	O
a	O
larger	O
main	O
memory	O
of	O
1	O
,	O
2	O
or	O
4	O
million	O
words	O
.	O
</s>
<s>
The	O
I/O	B-General_Concept
subsystem	O
was	O
separated	O
from	O
the	O
main	O
machine	O
,	O
connected	O
to	O
the	O
main	O
system	O
via	O
a	O
6Mbit/s	O
control	O
channel	O
and	O
a	O
100Mbit/s	O
High	O
Speed	O
Data	O
Channel	O
.	O
</s>
<s>
This	O
separation	O
made	O
the	O
1S	O
look	O
like	O
two	O
"	O
half	O
Crays	O
"	O
separated	O
by	O
a	O
few	O
feet	O
,	O
which	O
allowed	O
the	O
I/O	B-General_Concept
system	O
to	O
be	O
expanded	O
as	O
needed	O
.	O
</s>
<s>
Systems	O
could	O
be	O
bought	O
in	O
a	O
variety	O
of	O
configurations	O
from	O
the	O
S/500	O
with	O
no	O
I/O	B-General_Concept
and	O
0.5	O
million	O
words	O
of	O
memory	O
to	O
the	O
S/4400	O
with	O
four	O
I/O	B-General_Concept
processors	O
and	O
4	O
million	O
words	O
of	O
memory	O
.	O
</s>
<s>
The	O
Cray-1M	O
,	O
announced	O
in	O
1982	O
,	O
replaced	O
the	O
Cray-1S	B-Device
.	O
</s>
<s>
It	O
had	O
a	O
faster	O
12ns	O
cycle	O
time	O
and	O
used	O
less	O
expensive	O
MOS	B-Architecture
RAM	O
in	O
the	O
main	O
memory	O
.	O
</s>
<s>
All	O
of	O
these	O
machines	O
included	O
two	O
,	O
three	O
or	O
four	O
I/O	B-General_Concept
processors	O
,	O
and	O
the	O
system	O
added	O
an	O
optional	O
second	O
High	O
Speed	O
Data	O
Channel	O
.	O
</s>
<s>
Users	O
could	O
add	O
a	O
Solid-state	B-Device
Storage	I-Device
Device	I-Device
with	O
8	O
to	O
32	O
million	O
words	O
of	O
MOS	B-Architecture
RAM	O
.	O
</s>
<s>
In	O
1978	O
the	O
first	O
standard	O
software	O
package	O
for	O
the	O
Cray-1	B-Device
was	O
released	O
,	O
consisting	O
of	O
three	O
main	O
products	O
:	O
</s>
<s>
The	O
United	O
States	O
Department	O
of	O
Energy	O
funded	O
sites	O
from	O
Lawrence	O
Livermore	O
National	O
Laboratory	O
,	O
Los	O
Alamos	O
Scientific	O
Laboratory	O
,	O
Sandia	O
National	O
Laboratories	O
and	O
the	O
National	O
Science	O
Foundation	O
supercomputer	B-Architecture
centers	O
(	O
for	O
high-energy	O
physics	O
)	O
represented	O
the	O
second	O
largest	O
block	O
with	O
LLL	O
's	O
Cray	B-Operating_System
Time	I-Operating_System
Sharing	I-Operating_System
System	I-Operating_System
(	O
CTSS	O
)	O
.	O
</s>
<s>
CTSS	O
was	O
written	O
in	O
a	O
dynamic	O
memory	O
Fortran	B-Application
,	O
first	O
named	O
LRLTRAN	O
,	O
which	O
ran	O
on	O
CDC	B-Device
7600s	I-Device
,	O
renamed	O
CVC	O
(	O
pronounced	O
"	O
Civic	O
"	O
)	O
when	O
vectorization	O
for	O
the	O
Cray-1	B-Device
was	O
added	O
.	O
</s>
<s>
These	O
software	O
choices	O
had	O
influences	O
on	O
later	O
minisupercomputers	B-Device
,	O
also	O
known	O
as	O
"	O
crayettes	O
"	O
.	O
</s>
<s>
Libraries	O
started	O
with	O
Cray	O
Research	O
's	O
own	O
offerings	O
and	O
Netlib	B-Application
.	O
</s>
<s>
Other	O
operating	O
systems	O
existed	O
,	O
but	O
most	O
languages	O
tended	O
to	O
be	O
Fortran	B-Application
or	O
Fortran-based	O
.	O
</s>
<s>
Bell	O
Laboratories	O
,	O
as	O
proof	O
of	O
both	O
portability	O
concept	O
and	O
circuit	O
design	O
,	O
moved	O
the	O
first	O
C	O
compiler	O
to	O
their	O
Cray-1	B-Device
(	O
non-vectorizing	O
)	O
.	O
</s>
<s>
This	O
act	O
would	O
later	O
give	O
CRI	O
a	O
six-month	O
head	O
start	O
on	O
the	O
Cray-2	B-Device
Unix	B-Application
port	O
to	O
ETA	O
Systems	O
 '	O
detriment	O
,	O
and	O
Lucasfilm	O
's	O
first	O
computer	O
generated	O
test	O
film	O
,	O
The	O
Adventures	O
of	O
André	O
&	O
Wally	O
B	O
..	O
</s>
<s>
The	O
few	O
exceptions	O
were	O
climatological	O
and	O
meteorological	O
programs	O
until	O
the	O
NSF	O
responded	O
to	O
the	O
Japanese	O
Fifth	B-Device
Generation	I-Device
Computer	I-Device
Systems	I-Device
project	I-Device
and	O
created	O
its	O
supercomputer	B-Architecture
centers	O
.	O
</s>
<s>
Partly	O
because	O
Cray	O
were	O
interested	O
in	O
the	O
publicity	O
,	O
they	O
supported	O
the	O
development	O
of	O
Cray	B-General_Concept
Blitz	I-General_Concept
which	O
won	O
the	O
fourth	O
(	O
1983	O
)	O
and	O
fifth	O
(	O
1986	O
)	O
World	O
Computer	O
Chess	O
Championship	O
,	O
as	O
well	O
as	O
the	O
1983	O
and	O
1984	O
North	O
American	O
Computer	O
Chess	O
Championship	O
.	O
</s>
<s>
The	O
program	O
,	O
Chess	O
,	O
that	O
dominated	O
in	O
the	O
1970s	O
ran	O
on	O
Control	O
Data	O
Corporation	O
supercomputers	B-Architecture
.	O
</s>
<s>
Cray-1s	B-Device
are	O
on	O
display	O
at	O
the	O
following	O
locations	O
:	O
</s>
