A software program is a set of instructions that tells a computer how to perform specific tasks. These instructions are written in programming languages, such as Python or Java, and can range from simple applications like calculators to complex systems like operating systems or video games. Software programs enable users to interact with computers and perform various functions, such as word processing, data analysis, or web browsing. Software programs can be categorized into two main types: system software and application software. System software includes programs that manage hardware and provide a platform for running application software, such as Windows or macOS. Application software, on the other hand, is designed for end-users to accomplish specific tasks, like Microsoft Office for document creation or Adobe Photoshop for image editing.