#HelloWorld

  Concepts of  Virus & Worms ( Ethical Hacking )              👷  Posted By  Souvik Kumar Parui Introduction to Virus : Computer viruses have the potential to wreak havoc on both business and personal computer. Worldwide , most businesses have been infected at some point . A virus is a self replicating program that produces its own code by attaching copies of it into other executable codes. This virus operate without the knowledge of desire of the user .Like a real virus, a computer virus is contagious and can contaminate other files.  However virus can infect outside masons only with the assistance of computer users .Some virus affect computers as soon as their code is executed ; other viruses life dormant until a pre-determined logical circumstances it met . There are three categories of malicious programs ::        >    Trojans and rootkits        >    virus        >     Worms Worms is a malicious program that can infect both local and remote machines . Worms spread au

 Basic Concepts of Reversible Circuits ( Quantum Computing )                           - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -                        👷 Posted By Souvik Kumar Parui              Introduction : In recent years, the research community has shown considerable intentness towards the reversible logic due to its potential to minimize the power dissipation in the VLSI circuits to design a power efficient circuit. The reversible logic holds the key feature of designing the information lossless circuits and it may lead to zero-energy dissipation in the ideal case.     Reversible Logic :                      A function is called reversible if it has equal numbers of inputs and outputs and there exists a bijective mapping between them.  Reversible functions are used to implement the reversible circuits.      Example  :  Let us consider a function (x1, y1) → (x1, x1 ⊕ y1) is said to be a reversible function as the function has two