title: What is this concept of Pending Interrupts
body: <p>I am unable to fathom the term Pending Interrupts. I mean, the way I see asynchronous events is like "Time, tide and Interrupts" wait for none.</p>
  
  <p>Then what is this pending interrupts. How can I service a request that has come in the past, which has gone.</p>
  
  <p>Can someone please explain with a scenario where this is used.</p>
  
  <p>Edit: Definition wise it is understood (English sense), but If I am supposed to process Interrupts that had occurred before, am I looking at some buffering of data on the hardware device ?.</p>