This document discusses the role of computers in petroleum engineering. It begins by defining what a computer is and its basic components. It then outlines several applications of computers in petroleum engineering, including using handheld computers for field operations, various petroleum engineering software for tasks like reservoir modeling and production analysis, and making classrooms more effective through multimedia presentations. Online education enabled by computers is also discussed. Common Microsoft office applications like Word, Excel and PowerPoint are described and their relevance to petroleum engineering work explained.