Gottfried Wilhelm Leibniz (born 1646, died 1716) is considered the initiator of computer science, the innovator of differential and integral calculus. His interests were machines and clocks. His work was to build one of the first calculating machines in 1964, which used the zero-one method of writing numbers. His work has survived to this day, even in libraries to this day, use the classic numerical catalogs. These catalogs are the prototype of today’s databases.