Lecture 1 notes ict

This document provides an overview of basic concepts in information and communication technology (ICT). It defines a computer as an electronic device that accepts user input, processes it under programmed instructions, and produces output. The four main parts of a computer are described as the input, processing, storage, and output devices. Different types of computers are discussed, including supercomputers, mainframes, microcomputers, notebooks, tablets, and handheld devices. Computer peripherals both internal and external to the system unit are defined. Various applications of computers in fields like science, education, business, banking, and more are outlined. Finally, common units of measurement for digital data are presented.