This 1959 computer plays Boards of Canada's "Olson"

In 1962, MIT student Peter Samson transformed a hulking DEC PDP-1 computer into a musical instrument. His ingenious 'Harmony Compiler' program converted the machine's four status lights into square-wave voices, with each flicker producing a distinct note.
Today, the Computer History Museum maintains what's believed to be the last functioning PDP-1 in existence. — Read the rest
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