1. What is the role of computers in the modern world? Answer: Computers play a very important role in the modern world. They help us in almost every field such as education, healthcare, banking, communication, entertainment, and business. Computers make our work faster, easier, and more accurate. They are used to store information, solve problems, and control machines. 2. What are the applications of a computer? Answer: The main applications of a computer are: Education: Used for teaching, learning, and online classes. Healthcare: Used in hospitals for keeping records and diagnosing diseases. Banking: Used for managing accounts, online transactions, and ATMs. Business: Used for billing, data storage, and communication. Entertainment: Used for playing games, watching movies, and listening to music. Communication: Used for emails, chats, and video calls. Science and Research: Used for experiments, data analysis, and simulations. 3. Explain the ...