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Digital Light Processing (DLP) is a projection technology. DLP projectors use a spinning color wheel with a microprocessor-controlled array of mirrors called a digital micromirror device (DMD). Each mirror corresponds to a specific pixel. Each mirror reflects light toward or away from the projector optics.

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Plasma displays are another type of flat panel monitor that can achieve high levels of brightness, deep black levels, and a very wide range of colors. Plasma displays can be created in sizes of up to 150 inches (381 cm) or more. Plasma displays get their name from the use of tiny cells of ionized gas that light up when stimulated by electricity.

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An organic LED display uses a layer of organic material that responds to electrical stimulus to emit light. This process allows each pixel to light individually, resulting in much deeper black levels than LED. OLED displays are also thinner and lighter than LED displays.

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A light-emitting diode (LED) display is an LCD display that uses LED backlighting to light the display. LED has lower power consumption than standard LCD backlighting, allows the panel to be thinner, lighter, brighter, and display better contrast.

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Liquid crystal display (LCD) is commonly used in flat panel monitors and laptops. It consists of two polarizing filters with a liquid crystal solution between them. An electronic current aligns the crystals so that light can either pass through or not pass through

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These input devices are typically used on a computer to authenticate the user. A smart card may be the size of a credit card with an embedded microprocessor that is typically under a gold contact pad on one side of the card.

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These input devices identify a user based on a unique physical feature such as their fingerprints or voice. Many laptops now have fingerprint readers to automate logging in to the device.

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This device allows a designer or artist to create blueprints, images, or other artwork by using a pen-like tool called a stylus on a surface that senses where the stylus tip is touching it. Some digitizers have more than one surface, or sensor, and allow the user to create 3D models by performing actions with the stylus in mid-air.

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These devices digitize an image or document. The digitization of the image is stored as a file that can be displayed, printed, or altered. A bar code reader is a type of scanner that reads Universal Product Code (UPC) bar codes. It is widely used for pricing and inventory information.

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Digital Cameras and Digital Video Cameras

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Digital Cameras and Digital Video Cameras

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These input devices capture images that can be stored, displayed, printed, or altered. Stand-alone or integrated webcams capture images in real time.

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These are input devices for playing games. Gamepads allow the player to control movement and views with small sticks and multiple buttons. Many gamepads also have triggers that register the amount of pressure the player puts on them. Joysticks are often used to play flight simulation-style games.

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These input devices have touch or pressure sensitive screens. The computer receives instructions specific to the place on the screen that the user touches.

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These are the two most commonly used input devices. The keyboard is used to enter text while the mouse is used to navigate the graphical user interface (GUI). Laptops also have touchpads to provide built-in mouse features.