Communication System - SS1 ICT Past Questions and Answers - page 2

Information and Communication Technology (ICT) refers to the integration of various technologies that enable the processing, storage, retrieval, and exchange of information through electronic means. This includes both hardware (computers, devices) and software (applications, systems) components. ICT has transformed modern society by revolutionizing communication, enabling faster access to information, enhancing business processes, facilitating global collaboration, and contributing to education, healthcare, and entertainment sectors. It has become an essential driver of innovation and economic growth.

Broadcasting involves the one-way transmission of content to a large audience, as seen in radio and television. It's used for public announcements, entertainment, news, and information dissemination. Telecommunications, on the other hand, enables two-way communication over long distances, allowing real-time interaction between individuals or devices. It includes technologies like telephones, cellular networks, and VoIP. While broadcasting is suited for mass communication, telecommunications facilitates personalized and interactive communication.

Satellite communication involves sending signals to and receiving signals from satellites orbiting the Earth. Data is transmitted from an Earth station to a satellite, which then relays the data to another Earth station. Satellites facilitate long-distance communication, especially in remote areas where traditional infrastructure is lacking. Practical applications include global broadcasting (TV and radio), internet connectivity in remote regions, GPS navigation, weather forecasting, and scientific research.