Theory of computation

                                             T O C
                       ( ⇒Theory of computation ）

⇒Studies of machine capabilities is called T O C.

⇒We need programming language to instruct the       Hardware.

⇒machine language is the language accepted by        our machine means low level language.

⇒collection of string is called language.

⇒collection of input Alphabet or symbol is called      string.

⇒String length can be Zero.

⇒zero length string is called empty string.

⇒kleen clousure property is the combination of all language.
it means that it is the summation or the union of possibilities  from  0 to ∞.

⇒This type of language which contain all combination of input alphabet is called universal alphabet