History of Computer Science

From the last decade ,computers and internet(Information Technology ) had made our life fast and comfortable.I am posting some important events to remember the step by step building of modern Technology

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1822
Charles Babbage designs his first mechanical computer

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1848
Boolean algebra is invented by George Boole

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1880
Alexander Graham Bell invents the telephone called the Photophone

Understanding Internet:History governance and development

History
Inter-net or International Network,is a group of inter connected computers and devices all over the world.Internet is a modified or we can say a develop form of Arpanet (Network of US Defence Department) and NSFnet(a network of scientists to exchange information)  .It came into existence in 1982 after the Arpanet ,NSFnet and other commercial and private networks were linked together to exchange information through TCP/IP protocol.So we can say Internet is a network of networks.Before that numerous private and commercial networks exists, each having its own price plan,own protocol and terms.Internet was started with 50 servers and 7 domain names were introduced(.com,.net,.mil,.org etc) each having its own meaning .

What Is Java:Java vs Javascript

Java is a programming language that allows Web page developers to embed applets, including games and other programs that wouldn't run under normal coding. Java has become one of the most popular Web applications ever made, with 10 million users and counting since its creation.
Three people were behind the idea when it was first conceived in 1991. James Gosling, Mike Sheridan and Patrick Naughton had originally built the code with television in mind, hoping to take it to new interactive heights. However, at the time, digital cable wasn't quite ready for the technology, so Gosling turned to make it compatible with a Java virtual machine (JVM for short), with a language that used a C/C++ set-up.
Java vs. JavaScript

Sitemap :indexing the site

What is a sitemap?
Site map is just like a blueprint or like  a map of house it tells the search engine about your pages ,posts and links and help the engine to recogniseand add them in  index.Although adding of links in the search engine database is done by crawling frequently but sometimes some links are missed especially when the site is too big .Then one needs a sitemap.
Preparing a Site map?

RUPEE SYMBOL

In the recent period a new symbol has been introduced in the world,this is the symbol of currency of one of the big & developing country,India.This is the symbol of its rapidly increasing economy.the symbol of rupee(Rs.).Soon after its introduction in the world IT industry also introduced its code,so that it can be used on devices.You can easily get it from font list of your system

WIN XP IN WIN 7:xp mode:Virtual PC

If you have recently switched to windows 7 from windows xp,then the problem of compatibility must be coming,although in windows 7 a compatibility wizard is there to help you but for some application,it also fails.
especially programs  of dos (16bit) like c++,basic,logo may not be running (specially in win7 64bit),a notification saying  “select the correct architecture of the program  64bit or 32 bit“.Many solutions are here on net to overcome this problem ,specially third party software like dosbox are promoted to be used. This doesnt mean win7 does not support apps as win xp does,but the compatibility of win7 is 10times greater than xp.Win7 (64 bit can run any app no matter it is 16bit ,32bit or 64 bit),thats why we prefer 64bit processorof win7.
To troubleshoot the problem microsoft has introduced its virtualisation software 

Unlock win7/xp/vista:forgot password (not for getting unauthorise access)

Win7 has the highest security level and if you forgot your password ……then …..no need to tell ,here i am writing some ways to unlock your locked win7,xp,vista
TRICK 1

OPHHACK:FREE PASSWORD RECOVERY TOOL

INTRODUCTION

SIMPLE COMPUTER VIRUS MAKING

Here is a trick to make a computer virus .Computer virus are some times helpful as they can delete some unwanted file that either disturbs the authentication and genuinity of softwares or doing malicious works like spamming through your bandwidth


NOTE:

The post is for learning and helping purpose,this blog doesnt support hacking

DONT TRY AT YOUR COMPUTER OR YOU WILL LOST YOUR SYSTEM
TRY AT YOUR OWN RISK
NO TRICK IS THERE TO RECOVER THE SYSTEM

Making win7 genuine-Rearming win7

Windows activation flag on desktop is irritating you ,or your favourite wallpaper turns to black on each boot.I am telling you a simple method to reactivate your windows.you have to just follow the steps below

1. open command prompt window in admin mood(you can do this by clicking start>type cmd in search bar>right click on cmd link>select run as admin from drop down menu)