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Control-Alt-Del
Control-Alt-Delete (often abbreviated to Ctrl+Alt+Del, also known as the "three-finger salute" or "Security Keys") is a computer keyboard command on IBM PC compatible computers, invoked by pressing the Delete key while holding the Control and Alt keys: . The function of the key combination differs depending on the context but it generally interrupts or facilitates interrupting a function. For instance, in pre-boot environment (before an operating system starts) or in DOS, Windows 3.0 and earlier versions of Windows or OS/2, the key combination reboots the computer. Starting with Windows 95, the key combination invokes a task manager or security related component that facilitates ending a Windows session or killing a frozen application. History The soft reboot function via keyboard was originally designed by David Bradley. Bradley, as the chief engineer of the IBM PC project and developer of the machine's ROM-BIOS, had originally used , but found it was too easy t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
David Bradley (engineer)
David J. Bradley (born 4 January 1949) is one of the twelve engineers who worked on the original IBM PC, developing the computer's ROM BIOS code. Bradley is credited for implementing the "Control-Alt-Delete" (Ctrl-Alt-Del) key combination that was used to reboot the computer. Bradley joined IBM in 1975 after earning his doctorate in electrical engineering from Purdue University with a dissertation on computer architectures. Education Bachelors, Electrical Engineering, University of Dayton (Ohio), 1971. Master of Science, Electrical Engineering, Purdue University, 1972. PhD, Electrical Engineering, Purdue University, 1975. Control-Alt-Delete According to Bradley, Control-Alt-Delete was not intended to be used by end users, originally—it was meant to be used by people writing programs or documentation, so that they could reboot their computers without powering them down. This was useful since after a computer was powered down, it was necessary to wait a few seconds before p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
