Percy Edwin Ludgate was an Irish amateur scientist who designed the second analytical engine in
Percy Edwin Ludgate was an Irish amateur scientist who is known for designing the second analytical engine, a general-purpose Turing-complete computer.
Charles Babbage in 1843 and Percy Ludgate in 1909 designed the first two Analytical Engines in history. Ludgate's engine used multiplication as its basis (using his own discrete Irish logarithms), had the first multiplier-accumulator (MAC), was first to exploit a MAC to perform division, stored numbers as displacements of rods in shuttles, and had several other novel features, including for program control.
Percy Edwin Ludgate was an Irish amateur scientist who designed the second analytical engine in 1909, following the system of Charles Babbage in 1843. As part of the design, he devised a number of novel techniques, including Irish logarithms.
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