This document discusses the various uses of computers in different fields such as business, commerce, banking, industry, medicine, education, weather forecasting, transportation, defense, and nuclear energy. Computers are used in businesses for marketing, stock exchanges, and departmental stores. In banking, they handle multi-currency trading and automatic teller machines. Computers are also used in industry for machinery monitoring, temperature and pressure readings. Additional fields discussed include use of computers in travel, tourism, education, and home applications.