An abbreviation for “light emitting diode,” it’s an electronic device that lights up when electricity passes through it. LEDS are good for displaying images because they can be relatively small, and they do not burn out. However, they require more power than LCDs.
A keylogger is a small piece of hardware that is usually inserted between the keyboard port and the keyboard. The hardware keylogger then records all user keystrokes to it’s internal memory. These devices generally have memory capacities between 8Kb and 2MB.
Infrared, also known as “IR,” is a form of electromagnetic waves. Examples of everyday devices that use infrared include toasters, heat lamps, barbecue grills, remote controls, and lightbulbs.
High-definition video or HD video refers to any video system of higher resolution than standard-definition (SD) video, and most commonly involves display resolutions of 1280×720 pixels (720p) or 1920×1080 pixels (1080i/1080p).










