  Her Majesty was visiting the Science Museum in London and was looking at a major new exhibition, Top Secret
 Top Secret: From Ciphers to Cyber Security opens at the museum on July 10 and coincides with the 100th anniversary of GCHQ, who acted as expert advisers on the exhibition
 The Enigma M1070 machine from GCHQ’s collection will be on show, including many other objects
  As Queen Elizabeth II makes Twitter history – here are 10 more of the best first tweets  Queen of social media: Monarch hits Instagram at 92 with 1843 letter  The Queen shared a picture of a letter sent by Charles Babbage, credited as the world’s first computer pioneer to Prince Albert, the Queen’s great-great-grandfather, in 1843
 The Instagram post read: “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
” She signed off the post with ‘Elizabeth R.’ Her Majesty sent her first email in 1976 and she became the first Monarch to send an email, during a visit to the Royal Signals and Radar Establishment, a telecommunications research centre in Malvern
 Her username was ‘HME2’ and all she had to do was press a few buttons. The Queen used an iPad to share the photo on Instagram on Wednesday as she looked around the summer exhibition
 Sir Ian Blatchford, director of the Science Museum, said: “It is always a pleasure to welcome Her Majesty to the Science Museum, and I am delighted that HM The Queen has taken the opportunity to post on Instagram for the first time and announce Top Secret, our fantastic new exhibition
  A very modern monarch: The Queen sends her FIRST ever tweet and makes history   The Queen’s hand STILL bruised sparking health concerns   “This exhibition tells the incredibly important story of the hidden work that goes into keeping us safe every day
 “I’m thrilled that our expert advisors, GCHQ, have entrusted us with some of their most important objects, many of which are going on public display for the first time
 “Through this exhibition we want to engage people in the incredible work of our intelligence services and ignite their curiosity about future possibilities
” The Queen sent her first tweet from the Science Museum back in 2014. During the visit she tweeted: “It is a pleasure to open the Information Age exhibition today at the @ScienceMuseum and I hope people will enjoy visiting
 Elizabeth R.” Jeremy Fleming, director at GCHQ, said: “GCHQ has been at the heart of the nation’s security for 100 years
 It has saved countless lives, given Britain an edge, and solved or harnessed some of the world’s hardest technology challenges
 “It’s a privilege to share the exciting story of our people and technology. “This exhibition is critical - not just for GCHQ, but for engaging the UK public
 We want to inspire the next generation of cyber security and STEM skills experts for the challenges of the next 100 years
 “We believe that with the right mix of minds, anything is possible. “I hope that this unique collaboration with the Science Museum will encourage people of all ages and all parts of our society to think about the work we do and the role they could play in the future
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