  Posting the letter to Prince Albert from Charles Baggage, she signed off the note Elizabeth R
 The Queen had earlier arrived at the Science Museum to the delight of hordes of school children
 She wrote on Instagram: “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
  Meghan Markle stops DEAD in her tracks – risks breaking Queen protocol   Queen Elizabeth II: The Queen's 'powerful impact' on end of Cold War  “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
 "Elizabeth R." Standing in the Science Museum's new Smith Centre, the Queen was applauded after she shared the post on the royal Instagram account which was launched in 2013 and now has 4
6 million followers. Her majesty has always tried to embrace technology and did so on her last visit to the famous London museum
 In 2014, the 92-year-old sent her first-ever tweet from Twitter. The tweet read: "It is a pleasure to open the Information Age exhibition today at the @ScienceMuseum and I hope people will enjoy visiting
 Elizabeth R." The longest reigning British monarch has encountered a rapidly-changing world of technology from the invention of colour television to mobile phones and the internet
 During her coronation in 1953, television cameras were allowed inside Westminster Abbey, which led to the sale of half a million TV sets to watch the historic event
 The Queen also became the first monarch to send an email - during a visit to an Army base in 1976
   Meghan Markle news: Is this the REAL reason for bond with Charles?   How Prince Charles was 'FURIOUS with Tony Blair over fox hunting'  Her technological prowess was also extended to the World Wide Web in 1997, when the Queen's owns website www
royal.gov.uk was launched during a visit to Kingsbury High School in Brent, north-west London
 With the help of her granddaughters Princess Eugenie and Beatrice, in 2007 the Queen also launched her own Youtube channel in order to promote the British monarchy and keep fans up to date with the latest videos
 During her visit this afternoon, the Queen also unveiled a plaque for the Smith centre for their summer exhibition "Top Secret" in Kensington
  
