In 1850 – The first U.S. patent for push-key operation of a calculating machine was issued to Dubois D. Parmelee of New Paltz, N.Y.
In 1944 – At Bletchley Park in Great Britain, the Colossus Mk I attacked its first Lorenz-encrypted message. Enigma had been cracked but Lorenz was a tougher cipher used in communications between Hitler and his generals in World War II.
In 1974 – The U.S. space probe Mariner 10 returned the first close-up images of Venus and became the first spacecraft to use a gravity assist from one planet to help it reach another.
In 1999 – Victoria’s Secret’s online fashion show became the first major webcast, attracting an estimated 1.5 million viewers worldwide. Proving even back then, the Internet is for shopping.