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HRH was there to formally open the new Smith Centre by sharing archive images on The Royal Family Instagram account (as well as probably having a play with the electricity ball that makes your hair stand on end).
The account was first set up in 2013 to share images of The Royal Family's work and lives and help them and their followers across the world engage. It currently has 4.6 million followers.
Using an iPad, she shared an image of a letter from 19th century inventor and mathematician, Charles Babbage, to Prince Albert (her great great grandfather).
Charles, the pioneer of the computer, wrote to Prince Albert in 1843 about his Analytical Engine, a machine which performed maths calculations using punched cards and had a memory unit to store numbers.
Standing in the Science Museum's new Smith Centre, the Queen was applauded after she hit the button to share the post on The Royal Family Instagram account.
It was captioned: "Today, as I visit the Science Museum I was interested to discover a letter from the Royal Archives, written in 1843 to my great-great-grandfather Prince Albert. Charles Babbage, credited as the world's first computer pioneer, designed the "Difference Engine", of which Prince Albert had the opportunity to see a prototype in July 1843.
"In the letter, Babbage told Queen Victoria and Prince Albert about his invention the "Analytical Engine" upon which the first computer programmes were created by Ada Lovelace, a daughter of Lord Byron.
"Today, I had the pleasure of learning about children's computer coding initiatives and it seems fitting to me that I publish this Instagram post, at the Science Museum which has long championed technology, innovation and inspired the next generation of inventors.
We're pretty impressed if she typed it herself, but suspect she might had had a bit of help.
Her Majesty had an opportunity to look at communications objects from throughout history at the museum, including an enigma machine and the computer on which the World Wide Web was created.
The Queen sent her first tweet during her last visit to the Science Museum in 2014.
In a similar act, The Queen launched the first British Monarchy web site in 1997 and sent her first e-mail in 1976, during an engagement at a military base, the text appears below in the timeline.
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