Turing Machine Basics:
The Turing machine is an invention of a mathematician Alan Turing.
Turing machine is a very powerful machine. Any computer problem can be solved through Turing Machine.
Just like FA, Turing machine also has some states and some transition. Starting and ending states are also the part of Turing Machine.
Every transition on the states have 3 parts;
 Read
 Write
 Move
Read:
By read operation, machine can read any alphabet from the input tape; e.g, a,b,c,….x,y,z, 0,1 etc.
Write:
By Write operation, machine can write any alphabet; e.g, a,b,c,….x,y,z, 0,1 etc.
Move:
The move represents direction. Move tells where to move on input tape. e.g, if we say that move right, then it means that we need to move from one cell to the right cell on the input tape.
There are two types of the move;
Move left
Move right
Explanation of diagram:
There is in one little part of a Turing machine in the last figure. Let’s explain it;
Start state:
To start the machine
a,a,R:
Read a from input tape, Write a and then move one cell right on input tape.
b,b,R:
Read b from input tape, Write b, and then move one cell right on input tape.
Accept:
Machine successfully accept the string and Halts(Finish/complete).
Read More Examples of Turing Machine
 Turing Machine to copy a string: with animations
 Turing Machine of numbers divisible by 3: with animations
 Turing machine for anbncn: with animations

Turing machine of two equal binary strings: with animations

Turing Machine to Accepts palindromes: with animations

Turing machine for a’s followed by b’s then c’s where the number of a’s multiplied by the number of b’s and equals to the number of c’s: with animations

Turing machine to Add two binary numbers: with animations
 Turing machine to Multiply two unary numbers: with animations
 Turing machine to Multiply two binary numbers: with animations
 Turing Machine for the complement of a string
 Turing Machine for the language of a^{n}b^{n} where a=b.
 Turing Machine for a is less than b, a^{m}b^{n} where a=b or m=n.

Turing machine for the language of all those string in which a is less than b
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