<s>
Setun	B-Device
(	O
)	O
was	O
a	O
computer	O
developed	O
in	O
1958	O
at	O
Moscow	O
State	O
University	O
.	O
</s>
<s>
It	O
was	O
the	O
most	O
modern	O
ternary	B-Device
computer	I-Device
,	O
using	O
the	O
balanced	B-Algorithm
ternary	I-Algorithm
numeral	I-Algorithm
system	I-Algorithm
and	O
three-valued	O
ternary	B-Language
logic	I-Language
instead	O
of	O
the	O
two-valued	O
binary	O
logic	O
prevalent	O
in	O
other	O
computers	O
.	O
</s>
<s>
The	O
characteristic	O
operating	O
memory	O
consisted	O
of	O
81	O
words	O
of	O
memory	O
,	O
each	O
word	O
composed	O
of	O
18	O
trits	B-Algorithm
(	O
ternary	O
digits	O
)	O
with	O
additional	O
1944	O
words	O
on	O
magnetic	O
drum	O
(	O
total	O
of	O
about	O
7KB	O
)	O
.	O
</s>
<s>
Although	O
this	O
replacement	O
binary	O
computer	O
performed	O
equally	O
well	O
,	O
it	O
was	O
2.5	O
times	O
the	O
cost	O
of	O
the	O
Setun	B-Device
.	O
</s>
<s>
In	O
1970	O
,	O
a	O
new	O
ternary	B-Device
computer	I-Device
architecture	O
,	O
the	O
Setun-70	O
,	O
was	O
developed	O
.	O
</s>
<s>
Edsger	O
W	O
.	O
Dijkstra	O
's	O
ideas	O
of	O
structured	B-Language
programming	I-Language
were	O
implemented	O
in	O
the	O
hardware	O
of	O
this	O
computer	O
.	O
</s>
<s>
The	O
short	O
instructions	O
set	O
was	O
developed	O
and	O
implemented	O
by	O
Nikolay	O
Brusentsov	O
independently	O
from	O
RISC	B-Architecture
architecture	I-Architecture
principles	O
.	O
</s>
<s>
The	O
Setun-70	O
hardware	O
architecture	O
was	O
transformed	O
into	O
the	O
Dialogue	O
System	O
of	O
Structured	B-Language
Programming	I-Language
(	O
DSSP	O
)	O
.	O
</s>
<s>
DSSP	O
emulates	O
the	O
"	O
Setun	B-Device
70	O
"	O
architecture	O
on	O
binary	O
computers	O
,	O
thus	O
it	O
fulfills	O
the	O
advantages	O
of	O
structured	B-Language
programming	I-Language
.	O
</s>
<s>
DSSP	O
programming	O
language	O
has	O
similar	O
syntax	O
to	O
the	O
Forth	B-Application
programming	I-Application
language	I-Application
but	O
has	O
a	O
different	O
sequence	O
of	O
base	O
instructions	O
,	O
especially	O
conditional	O
jump	O
instructions	O
.	O
</s>
