An early calculator designed by Charles Babbage ... failed its test in 1833. Babbage then turned his attention to the Analytical Engine and completely abandoned the Difference Engine by 1842.

English engineer Charles ... father's work after he died in 1871. Before his passing, in 1854 Swedish inventor Georg Scheutz successfully built a machine based on Babbage's Difference Engine ...

Do you remember Charles ... despite years of work, the project had run out of funding and was abandoned, leaving Babbage disappointed but not deterred. While the Difference Engine was an ...