The document discusses the application of computers across various fields such as education, banking, medicine, engineering, business, defense, and space programs. Computers are used in education for online learning, lectures, and research. In banking, computers allow for ATM transactions, internet banking, and centralized records. Medicine utilizes computers for research, patient records, inventory, surgeries, and diagnostics like CT scans. Other fields like engineering use computers for design, simulations, and robotics.