title: What will happen if a application is large enough to be loaded into the available RAM memory?
body: <p>There is chance were a heavy weight application that needs to be launched in a low configuration system.. (Especially when the system has too less memory)
  Also when we have already opened lot of application in the system &amp; we keep on trying opening new new application what would happen?</p>
  
  <p>I have only seen applications taking time to process or hangs up for sometime when I try operating with it in low config. system with low memory and old processors..
  How it is able to accomodate many applications when the memory is low..? (like 128 MB or lesser..)
  Does it involves any paging or something else..?</p>
  
  <p>Can someone please let me know the theory behind this..!</p>