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Computer concepts
CH 6: Input and Output
| Term | Definition |
|---|---|
| 3D printer (additive manufacturing) | create objects by adding layers of material onto one another. |
| 3D scanner | use lasers, cameras, or robotic arms to record the shape of an object. |
| active display area (Size) | is measured by the diagonal length of a monitor’s viewing area. |
| aspect ratio | the proportional relationship between a display’s width and height. |
| bar code | vertical zebra-striped marks |
| bar code reader or scanner | read bar codes on products. |
| Bluetooth | used to connect wireless devices. |
| card reader | interpret encoded information located on a variety of cards. |
| carpal tunnel syndrome | found among heavy computer users, consists of damage to nerves and tendons in the hands. |
| clarity | a function of resolution (matrix of pixels, or picture elements), dot pitch, contrast ratio, size (active display area), and aspect ratio. |
| cloud printer | are printers connected to the Internet that provide printing services to others on the Internet. |
| combination key | perform actions when combinations of keys are held down. |
| contrast ratio | indicate a monitor’s ability to display images. It compares the light intensity of the brightest white to the darkest black. |
| cordless mouse / wireless mouse | uses radio waves or infrared light waves. |
| curved monitor | uses similar technology as flat-panel monitors except it has a concave screen that provides better viewing angles near the edges of the screen |
| digital camera | capture images digitally and store the images on a memory card or in the camera’s memory. |
| digital projector | project the images from a traditional monitor onto a screen or wall. |
| digital (interactive) whiteboard | devices with a large display connected to a computer or projector. The computer’s desktop is displayed on the digital whiteboard and controlled using a special pen, a finger, or some other device. |
| display screen / Monitors | are the most-used output device. |
| document scanner | is similar to a flatbed scanner except that it can quickly scan multipage documents. |
| dpi | dots per inch |
| drones / unmanned aerial vehicles (UAV) | take input from a controller from either a radio joystick or a Wi-Fi connected tablet or laptop. act as an output device, sending back video and sound to the user. |
| duplex printing | both sides of paper printing |
| e-book reader / e-reader | mobile devices for storing and displaying e-books and other electronic media including electronic newspapers and magazines. |
| e-books (electronic books) | traditional printed books in electronic format. |
| e-ink | produces images that reflect light like ordinary paper, making the display easy to read. |
| ergonomics | the study of human factors related to things people use. |
| flat-panel monitor | the most widely used type of monitor today. Compared to other types, they are thinner, are more portable, and require less power to operate. |
| flatbed scanner | is much like a copy machine. The image to be scanned is placed on a glass surface, and the scanner records the image. |
| game controller | provide input to computer games. |
| gamepads | designed to be held by two hands and provide a wide array of inputs including motion, turning, stopping, and firing. |
| gaming mice | similar to traditional mice with higher precision, faster responsiveness, programmable buttons, and better ergonomics |
| VR gloves | have sensors that collect data about your hand movements. |
| Google Cloud Print | a service that supports cloud printing. |
| grayscale | images are displayed using many shades of gray. |
| handwriting recognition software | translate handwritten notes into a form that the system unit can process. |
| hard copy | Printer output |
| VR headgear | has earphones and three-dimensional stereoscopic screens. |
| headset | combine the functionality of microphones and headphones. |
| inkjet printer | spray ink at high speed onto the surface of paper. |
| input | Any data or instructions that are used by a computer. |
| input device | Translate words, numbers, sounds, images, and gestures that people understand into a form that the system unit can process. |
| joystick | control game actions by users varying the pressure, speed, and direction of a control stick. |
| keyboard | convert numbers, letters, and special characters that people understand into electrical signals. |
| laptop keyboard | used on laptop computers. Smaller than traditional keyboard with fewer keys. Typically does not have numeric keypad or standard location for function and navigation keys. |
| laser printer | use a laser light beam to produce images with excellent letter and graphics quality. |
| light-emitting diode (LED) | monitors use similar technology with a more advanced backlighting technology. |
| liquid crystal display (LCD) | widely used for older monitors and is typically less expensive. |
| magnetic card reader | The encoded information is stored on a thin magnetic strip located on the back of the card. |
| magnetic-ink character recognition (MICR) | used by banks to automatically read those unusual numbers on the bottom of checks and deposit slips. |
| MaxiCode | widely used by the United Parcel Service (UPS) and others to automate the process of routing packages, tracking in-transit packages, and locating lost packages. |
| motion-sensing device | control games by user movements. |
| mouse | controls a pointer that is displayed on the monitor. |
| mouse pointer | usually appears in the shape of an arrow. |
| multifunctional device (MFD) | combine capabilities of scanner, printer, fax, and copy machine. |
| multitouch screen | accept multiple-finger commands. |
| optical-character recognition (OCR) | uses special preprinted characters that can be read by a light source and changed into machine-readable code. |
| organic light-emitting diode (OLED) | monitors replace the LED monitor’s backlighting technology with a thin layer of organic compound that produces light. |
| optical-mark recognition (OMR) | senses the presence or absence of a mark, such as a pencil mark. OMR is often used to score standardized multiple-choice tests. |
| optical mouse | It emits and senses light to detect mouse movement. |
| optical scanner / scanner | accepts documents consisting of text and/or images and converts them to machine-readable form. |
| output | is processed data or information. |
| output device | any hardware used to provide or to create output. |
| personal laser printer | less expensive and are used by a single user. They typically can print 15 to 17 pages a minute |
| pixel (picture elements) | form images on a monitor |
| pixel (Dot) pitch | the distance between each pixel. |
| plotter | special-purpose printers for producing a wide range of specialized output. |
| pointing device | provide an intuitive interface with the system unit by accepting physical movements or gestures and converting them into machine-readable input. |
| portable scanner | A handheld device that slides across the image, making direct contact. |
| printer | translate information that has been processed by the system unit and present the information on paper. |
| repetitive strain injury (RSI) | Any injury that is caused by fast, repetitive work that can generate neck, wrist, hand, and arm pain. |
| resolution (monitor) | expressed as a matrix of these dots or pixels. |
| resolution (printer) | Printer resolution is measured in dpi. The higher the dpi, the better the quality of images produced. |
| RFID reader | located several yards away. |
| RFID (radio-frequency identification) tag | tiny chips that can be embedded in most everything. |
| robots | use cameras, microphones, and other sensors as inputs. Based on these inputs, robotic outputs can be as complex as exploring damaged nuclear reactors to as simple as taking a photo. |
| scanning device | move across text and images to convert them into a form that the system unit can process. |
| shared laser printer | typically support color, are more expensive, and are used (shared) by a group of users. |
| smart card | When the card is swiped through the magnetic card reader, the information is read. Many credit cards |
| soft copy | Output of mornitor |
| speaker / headphone | audio-output device |
| stylus | used with tablets and mobile devices. |
| technical writer | prepare instruction manuals, technical reports, and other documents. |
| telephone | input and output devices. |
| telephony (Internet Telephony) | A VoIP application that uses Internet to support voice communication. |
| thermal printer | use heat elements to produce images on heat-sensitive paper. |
| thumb keyboard | used on smartphones and other small mobile devices. Designed primarily for communicating via texting and connecting to the web. |
| toggle key | turn features on and off. |
| touch pad | operates by touching or tapping a surface. It is widely used instead of a mouse with laptops and some types of mobile devices. |
| touch screen | allow users to select actions by touching the screen with a finger or penlike device. |
| traditional keyboard | used on desktop and larger computers. Standard keyboard has 101 keys. |
| Universal Product Code (UPC) | are widely used by retail stores to automate the processes to check out customers, to change product prices, and to maintain inventory records. |
| ultra-high-definition television (UHDTV) | delivers a much clearer and more detailed wide-screen picture than regular HDTV. |
| virtual keyboard | primarily used on mobile devices and tablets. Does not have a physical keyboard. |
| virtual reality (VR) | n artificial, or simulated, reality created in 3D by computers. It strives to create a virtual. |
| voice over IP (VoIP) | a set of standards or technologies that support voice and other types of communication over the Internet. |
| voice recognition system | use a microphone, a sound card, and special software. |
| webcam | specialized digital video cameras that capture images and send them to a computer for broadcast over the Internet. |
| wheel button | rotates to scroll through information on the monitor. |
Created by:
TroyIS2241
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