1947 – ENIAC was switched on after being transferred to the Aberdeen Proving Ground, Maryland. It operated continuously until October 2 1955.
1951 – A recording was made of Beethoven’s 9th by EMI that eventually became used to justify the diameter of the CD.
1958 – President Eisenhower signed the National Aeronautics and Space Act, creating the National Aeronautics and Space Administration.
2015 – Microsoft launched Windows 10 as a free upgrade for users of Windows 7 and Windows 8.1.
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