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David Bradley (engineer)
David Bradley (born 4 January 1949) was 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" key combination that was used to reboot the computer.
==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 powering it up again to avoid potential damage to the power supply and hard drive. Since software developers and technical writers would need to restart a computer many times, this key combination was a big time-saver. David Bradley and Mel Hallerman chose this key combination because it is practically impossible to accidentally press this combination of keys on a standard original IBM PC keyboard.〔
However, the key combination was described in IBM's technical reference documentation〔 and thereby revealed to the general public.
At the 20th anniversary of the IBM PC, while on a panel with Bill Gates, Bradley said, ''"I may have invented it (), but I think Bill made it famous"''.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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