David Bradley is to retire this week after working 29 years with IBM.

Bradley's claim to fame is that he devised the most famous - and probably most used - three key combination in computer history: Ctrl-Alt-Del.

When the PC industry celebrated the PC's 20 year anniversary in 2001, Bradley came with the famous quote:

"I may have invented control-alt-delete, but Bill Gates made it really famous."

This comment brought boundless laughter from the PC loving crowd. Bill Gates did not even crack a smile.

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