What is the history of the computer from the 12th century?

The history of computers from the 12th century can be traced back to early mechanical devices like the astrolabe and the abacus, which aided in calculations and navigation. The 17th century saw the invention of mechanical calculators, such as Blaise Pascal's Pascaline and Gottfried Wilhelm Leibniz's Step Reckoner. The 19th century marked a significant leap with Charles Babbage's design for the Analytical Engine, considered the first concept of a general-purpose computer, later complemented by Ada Lovelace's programming ideas. The evolution continued into the 20th century, leading to the development of electronic computers during and after World War II.