Data entry is the process of inputting, updating, or managing data into a computer system or database. It involves transcribing information from various sources such as paper documents, audio recordings, or online forms into digital formats. Data entry tasks may include entering text, numbers, or codes, ensuring accuracy, and organizing data in a structured format for easy retrieval and analysis. It requires attention to detail, fast typing skills, and proficiency with software tools such as spreadsheets or databases.