The Hour of Code started as a one-hour introduction to computer science, designed to demystify "code", to show that anybody can learn the basics, and to broaden participation in the field of computer science. It has since become a worldwide effort to celebrate computer science, starting with 1-hour coding activities but expanding to all sorts of community efforts. This grassroots campaign is supported by over 400 partners and 200,000 educators worldwide.
The Hour of Code takes place each year during Computer Science Education Week which is held in recognition of the birthday of computing pioneer Admiral Grace Murray Hopper (December 9, 1906).