Setun

Setun (Russian: Сетунь) was a computer developed in 1958 at Moscow State University. It was built under the leadership of Sergei Sobolev and Nikolay Brusentsov. It was the only modern ternary computer, using the balanced ternary numeral system and three-valued ternary logic instead of the two-valued binary logic prevalent in other computers. The computer was built to fulfill the needs of Moscow State University. It was manufactured at the Kazan Mathematical plant. Fifty computers were built from 1959 and production was halted in 1965. Between 1965 and 1970 a regular binary computer was used at Moscow State University to replace it. Although this replacement binary computer performed equally well, it was 2.5 times the cost of the Setun. In 1970, a new model of the ternary computer, the Setun-70, was developed.

Setun was named after the Setun River, which ends near Moscow University.

DSSP

DSSP (Dialog System for Structured Programming) is a programming language designed for Setun. It was created by students in the laboratory of Nikolay Brusentsov at the Computer Science department of the Moscow State University in 1980. The 32-bit version was created in 1989.

Setun River

The Setun (Russian: Сетунь) is a river in the west of Moscow and the largest tributary of the Moskva River in Moscow. The length of the river is 38 kilometers (24 mi), 20 kilometers (12 mi) of which is in Moscow itself. Its basin has an area of 190 square kilometers (73 sq mi). The Setun River originates in the village of Salariyevo in Moscow Oblast and flows into the Moskva River near Krasnoluzhsky Road Bridge, opposite of the village of Luzhniki. The river teems with roach, European perch, crucian carp, pike, and other fish, but is of no value to the fishing industry due to pollution with toxic waste.

The border territory upon the both banks is included in Setun's river valley Wildlife Sanctuary, placed in the Moscow city bounds.

Image gallery

The Setun River near its influx into the Moskva River

The Setun River near its influx into the Moskva River

Floating litter trap

Floating litter trap

Coordinates: 55°43′40″N 37°32′38″E / 55.7278°N 37.5439°E / 55.7278; 37.5439