Ramón Silvestre Verea Aguiar y García (Curantes 1833 – Buenos Aires 1899) journalist, engineer, writer and inventor. He invented the first calculator capable of direct multiplication. He won a medal at the World Exhibition of Inventions in Cuba in 1878. In New York, he founded the publication El Cronista and the magazine El Progreso. He defended equality between races, between men and women, the abolition of slavery and freedom of expression. In 1895 he went into exile in Guatemala, due to his opposition to U.S. colonialist policies, and then moved to Buenos Aires where he continued to work as a journalist until his death.