The first mechanical computer was the Difference Engine built in 1822 by Charles Babbage, considered as the "father of the computer." Between 1847 and 1849, he made an improved version of his first model, which he called Difference Engine No. 2. However, the machine was not transformed into a full-scale functional device due to lack of funding.Continue Reading
The Difference Engine did not resemble the modern computers of today. It was massive and consisted of up to 25,000 components. The machine weighed 15 tons and was 8 feet tall.
In 1991, the London Science Museum completed the Difference Engine No. 2 to commemorate the bicentennial of Babbage's birth year.Learn more about Computer History
The first computer was designed by English mathematician Charles Babbage in the 1800s. He referred to it as an Analytical Engine, and although it was never built, its design became the framework for the design of modern computers.Full Answer >
The Z3, designed in Germany by Konrad Zuse and completed in 1941, is widely considered to be the first programmable computer. While later computers were significantly faster, the Z3 laid the groundwork for further development.Full Answer >
According to a 1986 contest held by Boston's Computer Museum, the first true computer was the Kenbak-1, designed by John Blankenbaker in 1971. The Kenbak-1 is considered the first personal computer, although it had no microprocessor and used small- and medium-scale integrated circuits.Full Answer >
The invention of the first tablet PC, or personal computer, is credited to three men: Alan Kay, Steve Jobs and Bill Moggridge. Computer specialist Kay created the concept for the tablet PC in the early 1960s, which he called the Dynabook, but need technical expertise to build the product. Technical enthusiast Jobs analyzed Kay’s product in the 1970s, and lent a hand in determining the components needed to build the machine.Full Answer >