What happened on this date in history? Explore landmark events, discoveries, and curiosities from November 15.
Curiosity for 2028-11-15
Today is a great day to plan ahead and organize your upcoming commitments.
Source: gemini
World's First Single-Chip Microprocessor Launched (Nov 15, 1971)
On November 15, 1971, Intel introduced the 4004, the first commercially available single-chip microprocessor. Designed by Federico Faggin, Marcian Hoff, Stanley Mazor, and Masatoshi Shima, this groundbreaking invention integrated 2,300 transistors onto a single silicon chip. Initially developed for Busicom calculators, the 4004 revolutionized computing, paving the way for the personal computer era and countless technological advancements that define our modern digital world.
Source: gemini
Brazil's Republic Day
On November 15, 1889, Brazil transitioned from an Empire to a Republic. Marshal Deodoro da Fonseca led a military coup, deposing Emperor Pedro II and ending the Brazilian Empire. This pivotal event, known as the Proclamation of the Republic, established a republican government. It profoundly reshaped the nation's political system, initiating the Old Republic period. This date is now a federal holiday across Brazil.
Source: gemini
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