Insta-Monarch: Queen Elizabeth makes first Instagram post

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LONDON (AP) - Queen Elizabeth II has posted her first Instagram image.

Queen Elizabeth II is, and has been since her accession in 1952, Queen of the United Kingdom, Canada, Australia, and New Zealand, and Head of the Commonwealth. Birthday 4/21 1926

The media-savvy queen posted from the Science Museum Thursday to help promote the museum's summer exhibition.

Using an iPad, she shared an image on the official royal family Instagram account of a letter from 19th century inventor and mathematician Charles Babbage to Queen Victoria and Prince Albert.

The queen's post said: "In the letter, Babbage told Queen Victoria and Prince Albert about his invention, the Analytical Engine, upon which the first computer programs were created by Ada Lovelace, a daughter of Lord Byron. "

The royal Instagram account was launched in 2013 and has 4.6 million followers.