Information Technology, Computer and telecommunication hardware and software that store, transmit, receive and manipulate information, Wave Pulse, A pulse of energy that travels through an electric circuit when it is closed, Electronic signal, Information that is sent as a pattern in a controlled flow of current through a circuit, Electromagnetic signal, Information that is sent as a pattern of electromagnetic waves, such as visible light, microwaves, and radio waves, Digital Signal, A signal that allows for a record of numerical values of an action at a set of continuous time intervals, Analog Signal, A signal that allows for a continuous record of some kind of action, Pixel, A small uniform shape, that is combined with other pixels to make a larger image, Software, Programs that encode, decode and interpret information, Hardware, Any physical part of a computer, Noise, Random signals from the environment that can alter the output of a signal, Bandwidth, The amount of information that can be transmitted in bits per second

Information Technology- SNB p. 39

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