The first scientific hand-held calculators (HP-35) hit the markets with a hefty price tag at $395.
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Myanmar's leader Aung San Suu Kyi was removed from power by a military coup d'état.
Mary Queen of Scots received the death sentence from cousin Queen Elizabeth I.
The Civil Marriage Act was introduced, making same-sex marriage legal in Canada.
Legendary rock singer Ozzy Osbourne announced his retirement from touring.
The first reusable spacecraft called ''Space Shuttle Columbia" broke apart when returning to Earth, and all seven astronauts on board died.
