"It is a pleasure to open the Information Age exhibition today at the @ScienceMuseum and I hope people will enjoy visiting. Elizabeth R."
That was the Queen's first tweet - sent through the @BritishMonarchy account - heralding the launch of a major new exhibition at London's Science Museum.
Three years in the planning, the exhibition is one of the most ambitious projects the museum has undertaken.
Alongside historic objects, visitors can enjoy interactive experiences. The Information Age gallery, opened by the Queen this morning, takes visitors on a journey through the history of modern communications from the telegraph to the smartphone.
There is the first transatlantic telegraph cable which connected Europe and North America, the broadcast equipment behind the BBC's first radio programme in 1922, and Sir Tim Berners-Lee's NeXT computer, which hosted the first website.
