Percy Ludgate

Percy Edwin Ludgate was an Irish accountant in Dublin and designer of an Analytical Engine.Working alone, Ludgate designed an Analytical Engine while unaware of Charles Babbage's designs. Ludgate's engine used multiplication as its base mechanism. Its precise mechanism is unknown as the only written accounts of the engine which survive do not detail its workings.Ludgate also helped advance calculators by expanding Charles Babbage's design for the first programmable computer. He was one of a few independent workers in the field of science and mathematics.