The document summarizes several important inventions including glasses, computers, calculators, cassettes, jeans, and compasses. Glasses were invented in Italy in 1286 to help people see better. The computer was invented by John Vincent Atanassoff in the 1930s-1940s to help people find information, surf the internet, and watch movies. Calculators were invented by Blaise Pascal in 1642 to help with math operations. Cassettes were invented by Philips in the 1960s to record music and information. Jeans were invented by Levi Strauss in the United States in 1872 due to their strong cloth. Compasses were invented in China in the 9th century to help guide people.