Nielit Scientist-B CS 4-12-2016
April 5, 2025Nielit Scientist-B CS 4-12-2016
April 5, 2025Nielit Scientist-B CS 4-12-2016
| Question 6 |
Which of the following is TRUE?
| Turing machine is a simple mathematical model of general purpose computer | |
| Turing machine is more powerful than finite automata | |
| Turing Machine can be simulated by a general purpose computer | |
| All of these |
Question 6 Explanation:
● A Turing machine is a mathematical model of computation that defines an abstract machine,which manipulates symbols on a strip of tape according to a table of rules.
● Despite the model’s simplicity, given any computer algorithm, a Turing machine capable of simulating that algorithm’s logic can be constructed.
● The machine operates on an infinite memory tape divided into discrete cells.
● The machine positions its head over a cell and “reads” (scans)the symbol there.
● Then, as per the symbol and its present place in a finite table of user-specified instructions, the machine (i) writes a symbol (e.g., a digit or a letter from a finite alphabet) in the cell (some models allowing symbol erasure or no writing), then (ii) either moves the tape one cell left or right (some models allow no motion, some models move the head), then (iii) (as determined by the observed symbol and the machine’s place in the table) either proceeds to a subsequent instruction or halts the computation.
● Despite the model’s simplicity, given any computer algorithm, a Turing machine capable of simulating that algorithm’s logic can be constructed.
● The machine operates on an infinite memory tape divided into discrete cells.
● The machine positions its head over a cell and “reads” (scans)the symbol there.
● Then, as per the symbol and its present place in a finite table of user-specified instructions, the machine (i) writes a symbol (e.g., a digit or a letter from a finite alphabet) in the cell (some models allowing symbol erasure or no writing), then (ii) either moves the tape one cell left or right (some models allow no motion, some models move the head), then (iii) (as determined by the observed symbol and the machine’s place in the table) either proceeds to a subsequent instruction or halts the computation.
Correct Answer: D
Question 6 Explanation:
● A Turing machine is a mathematical model of computation that defines an abstract machine,which manipulates symbols on a strip of tape according to a table of rules.
● Despite the model’s simplicity, given any computer algorithm, a Turing machine capable of simulating that algorithm’s logic can be constructed.
● The machine operates on an infinite memory tape divided into discrete cells.
● The machine positions its head over a cell and “reads” (scans)the symbol there.
● Then, as per the symbol and its present place in a finite table of user-specified instructions, the machine (i) writes a symbol (e.g., a digit or a letter from a finite alphabet) in the cell (some models allowing symbol erasure or no writing), then (ii) either moves the tape one cell left or right (some models allow no motion, some models move the head), then (iii) (as determined by the observed symbol and the machine’s place in the table) either proceeds to a subsequent instruction or halts the computation.
● Despite the model’s simplicity, given any computer algorithm, a Turing machine capable of simulating that algorithm’s logic can be constructed.
● The machine operates on an infinite memory tape divided into discrete cells.
● The machine positions its head over a cell and “reads” (scans)the symbol there.
● Then, as per the symbol and its present place in a finite table of user-specified instructions, the machine (i) writes a symbol (e.g., a digit or a letter from a finite alphabet) in the cell (some models allowing symbol erasure or no writing), then (ii) either moves the tape one cell left or right (some models allow no motion, some models move the head), then (iii) (as determined by the observed symbol and the machine’s place in the table) either proceeds to a subsequent instruction or halts the computation.