The document discusses different types of computer software. It describes system software as programs that control the overall computer system, such as operating systems. It provides examples like Windows, Unix, and Mac OS. Application software is designed to perform specific tasks like Microsoft Word, Excel, web browsers. Spreadsheets are described as programs used for calculating, budgeting and organizing numeric data in tables and charts. Computer networks allow users to connect to the web, download files, and connect with other people.