If there’s one most memorable combination of keys on a keyboard, its probably control+alt+delete. Whether it’s closing a program for the hell of it or trying to get your CPU to work right when it’s frozen, control+alt+delete has been one of the handiest tools that the computer keyboard has ever offered.
This famous key combination was developed sometime around 1975 by IBM designer David Bradley. Control+alt+delete was actually originally control+alt+escape, but Bradley found that the user could too often accidently hit this key combination, thus resulting in an accidental reboot of the system. OOPS!