"The physical components of a computer system such as electronic, magnetic and mechanical devices which we can touch by our hand as known as called Hardware."

 For examples:  

  1.  Keyboard
  2.  Monitor  
  3.  Printer 
  4.  Speaker  
  5.  Mouse 
  6.  Floppy Drive
  7.  CD/DVD Drive 
  8.  Projector
  9.  C.P.U. 
  10.  Hard disk 
  11.  Motherboard etc.