Mostly now a day every one is found of using this “CTRL+ALT+DEL” in Windows operating system. Have you ever thought of the person who invented "CTRL + ALT + DEL" key combination? "David Bradley" -- He is the One who spent 1 minute and 23 seconds in writing the source code that rescues the world's PC users for decades. I would also share some information about him here. His formula forces obstinate computers to restart when they no longer follow other commands. By 1980, Bradley was one of 12 people working to create the debut. The engineers knew they had to design a simple way to restart the computer when it fails to respond the user -- Bradley wrote the code to make it work. Bradley said. "I did a lot of other things than Ctrl-Alt-Delete, but I'm famous for that one." His fame and success is achieved each time a PC user fails. He commented his relationship with Bill gates by saying “I may have invented it, but Bill gates made it famous by applying my formula when ever any Microsoft's Windows operating system made by him CRASHES, thus I win when ever he looses".