Explain the alphabet and string, Operating System

Assignment Help:

Explain the Alphabet and String

A finite set of symbols is known as alphabet. An alphabet is frequently denoted by sigma, yet can be given any name.

B = {0, 1} says B is an alphabet of two symbols, 0 and 1.

C = {a, b, c} says C is an alphabet of three symbols, a, b and c.

Occasionally space and comma are in an alphabet whereas other times they are meta symbols employed for descriptions. A language is determined over an alphabet. For instance binary language is defined over alphabet B. 

A finite sequence of symbols from an alphabet is known as string or word.

01110 and 111 are strings from the alphabet B above.

aaabccc and b are strings from the alphabet C above.

A null string is a string along with no symbols, generally denoted by epsilon has zero length.

 

 


Related Discussions:- Explain the alphabet and string

Operating system services, explain about oprating system services and topic...

explain about oprating system services and topics briefly

Minor page fault , Minor page fault :I f the page is loaded in memory at t...

Minor page fault :I f the page is loaded in memory at the time the fault is started, but is not checked in the memory management unit as being loaded in memory, then it is named a

Algorithm for reconstructing a logical ring, Q. Present an algorithm for re...

Q. Present an algorithm for reconstructing a logical ring after a process in the ring fails? Answer: Typically distributed systems utilize a coordinator process that performs

Virtual memory, In modern operating systems, applications do not directly a...

In modern operating systems, applications do not directly access the physical memory. Instead, they use so-called virtual memory, where each virtual address is translated to a phys

What is an acyclic graph, What is an acyclic graph? A tree that has bee...

What is an acyclic graph? A tree that has been corrupted by links to other branches, but does not have any cyclic paths in it.

Describes attributes, What are attributes? Attributes are the one, whic...

What are attributes? Attributes are the one, which explains the properties of data object.

What are the objectives of operating system?, What are the objectives of op...

What are the objectives of operating system? Objectives of OS 1.      Convenience: An OS makes a computer more suitable to use. 2.      Efficiency : An OS allows t

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd