# Turing machine

- A mathematical device used by the English mathematician Alan Turing (1912–54) to make precise the notion of an algorithm, or an effective computation. A Turing machine is a computer with a potentially infinite linear tape in both directions, divided into discrete squares that are scanned one at a time. Symbols in the squares are from a finite alphabet. The instructions for the machine are sets of ordered quintuples: <q
_{i}, s_{i}, s_{k}, M, q_{j}>. q_{i}is the state the machine is in at the first moment, s_{i}is the symbol it reads on the square, s_{k}a symbol with which it replaces it, M is the instruction to move one square right or left or remain where it is, and q_{j}the state at the next moment. A function f(*x*) is Turing computable if, when some representation of the argument*x*is put on the tape, the machine halts on a representation of the value f(*x*). The class of Turing computable functions is identical with the class of general recursive functions (see also Church's thesis ).

*Philosophy dictionary.
Academic.
2011.*

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**Turing machine**— Turing o mašina statusas T sritis automatika atitikmenys: angl. Turing machine vok. Turing Maschine, f rus. машина Тьюринга, f pranc. machine de Turing, f ryšiai: sinonimas – Tiuringo mašina … Automatikos terminų žodynas**Turing machine**— 1937, named for English mathematician and computer pioneer Alan M. Turing (1912 1954), who described such a device in 1936 … Etymology dictionary**Turing machine**— n. [after TURING Alan Mathison, its originator] an early hypothetical model for a simple computer capable theoretically of solving complex problems by performing a small number of basic operations … English World dictionary**Turing machine**— For the test of artificial intelligence, see Turing test. For the instrumental rock band, see Turing Machine (band). Turing machine(s) Machina Universal Turing machine Alternating Turing machine Quantum Turing machine Read only Turing machine… … Wikipedia**Turing machine**— /toor ing, tyoor /, Math. a hypothetical device with a set of logical rules of computation: the concept is used in mathematical studies of the computability of numbers and in the mathematical theories of automata and computers. [after Alan M.… … Universalium**Turing machine**— noun An abstract computing machine introduced in 1936 by Alan Turing to give a mathematically precise definition of computability. See Also: universal Turing machine, Turing complete, Turing function … Wiktionary**Turing Machine**— The Claim That Man Can Be Understood as a Turing Machine [W]hen Minsky or Turing claims that man can be understood as a Turing machine, they must mean that a digital computer can reproduce a human behavior . . . by processing data… … Historical dictionary of quotations in cognitive science**Turing machine**— Tu′ring machine [[t]ˈtʊər ɪŋ, ˈtyʊər [/t]] n. math. a hypothetical computing device used in mathematical studies of the computability of numbers and in theories of automata • Etymology: after Alan M. Turing (1912–54), English mathematician, who… … From formal English to slang**Turing machine**— noun Etymology: A. M. Turing died 1954 English mathematician Date: 1937 a hypothetical computing machine that has an unlimited amount of information storage … New Collegiate Dictionary**Turing machine**— noun a mathematical model of a hypothetical computing machine which can use a predefined set of rules to determine a result from a set of input variables. Origin named after the English mathematician Alan Turing (1912–54) … English new terms dictionary