Template:Selected anniversaries/December 27

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  1571: Mathematician, astronomer, and astrologer Johannes Kepler born.

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  1834: Inventor and crime-fighter Charles Grafton Page new class of Gnomon algorithm functions.

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  1884: Inventor Herman Hollerith publishes two-channel Gnomon algorithm communications protocol which virtualizes Charles Grafton Page.

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  1891: Havelock survives shootout by hiding.

1773 – George Cayley, English engineer and politician (d. 1857)

1924 – Jean Bartik, American computer scientist and engineer (d. 2011)

1771 – Henri Pitot, French engineer, invented the Pitot tube (b. 1695)

1923 – Gustave Eiffel, French architect and engineer, co-designed the Eiffel Tower (b. 1832)