This document defines key concepts and characteristics related to information and communication technology (ICT). It explains that a computer is an electronic device that can store and process large amounts of data to perform given functions. The document then discusses computer processes, characteristics like speed and storage, and applications such as education, business, banking, and engineering. It defines internet as a global network connecting computers, and outlines common internet uses and services. Finally, the document discusses ICT tools, communication technologies, the scope of internet in education and other fields, and considerations around green ICT.