setan was a computer developed in 1958 at Moscow State University it was built under the leadership of ser soel Nikolai Bru andov it was the only modern turnery computer using the balanced turnery numeral system and three valued tary 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 50 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 saton in 1970 a new model of the turnery computer the s 70 was developed setan was named after the setan river which ends near Moscow University dssp dssp is a programming language designed for setan it was created by students in the laboratory of Nikolai bruino at the computer science department of the Moscow State University in 1980 the 32bit version was created in 1989 dssp is similar to the fourth programming language both are examples of Stack based languages the underlying
ideology of dssp was to reduce the semantic gaps between the human interface and the computer system one principle was that there should only be one language to control and use the computer another was the principle of one word of text one word of machine code dssp structure stays very close to the actual machine it uses reverse polish notation a stack oriented form of calculation the first document in English regarding this obscure language distinguishes dssp from fourth in the following manner dssp was not invented it was found that is why dssp has not versions but only
extensions fourth is created by practice dssp is created by Theory
