How Does Anti virus detects viruses?

I hope you know what is computer Anti Virus. But you may not know how the anti virus works.  Here i am sharing how the antivirus software works. 

What you know about Anti Virus software?Antivirus software gives protection against the viruses and Malware. Antivirus can detect the malicious software ,then delete or put it in quarantine. 



The process behind the Anti VirusThe Antivirus follows