Flashcards
INPUT DEVICES
Flashcards do conjunto (28)
- 1QWERTY keyboardMost common type of input device and it consist of keys(numbers, letters etc.).Some keyboards are ergonomics and have been designed to reduce RSI.
- 2KeypadSmaller versions of keyboards and used in small devices like mobile phones
- 3MouseMost common type of input devices to move pointer around the screens and select options by clicking. Could be either mechanical or optical
- 4Mechanical mouseUses rolling ball to sense position
- 5Optical MouseUses light sensor to detect motion
- 6TrackpadFound in laptops and uses fingertips to control the computer's cursor
- 7Magnetic strip cardsThese are easy to read but can't hold much data and can be easily scratched
- 8Smart cardComputer chip built in and holds data on the chip, data can be also written on it. The use of card has to be authorised by PIN therefore more secure e.g. credit card
- 9Optical Mark RecognitionUses light beam to sense the position of pencil or other marks on data capture forms
- 10Optical Character recognitionUses a scanner and a specialist software to turn paper based text into computer characters
- 11PDASmall computer, usually about the size of a hand.Combine input and output.Has a handwriting recognition software.Used device by stylus or fingertips
- 12Radio Frequency IDUses radio waves to transmit unique serial numbers as form of ID objects
- 13Flat-bed scannersHas a flat glass plate where the document is placed
- 14Barcode scannerForm of flat-bed scanner used in supermarkets
- 15Hand-held scannerMainly used in shops that sell large items
- 16In sheet-feed scannerScanner stay still and the paper is moved over
- 17Magnetic Ink Character recognitionUses magnetic ink to print characters shaped to ANSI standards which can be read and used to direct cheques and other negotiable document
- 18SamplingA way of recording sound digitally so that it can be input into a computer
- 19Sample rateNumber of times per second, a sound reading is taken
- 20MIDIMusic can be entered into a computer through instruments linked to computer
- 21WebcamSmall video camera that are often used for video calls (videoconferencing)
- 22Digital CameraTakes digital versions of a scene that has been photographed. Can be connected to computer by cable or Bluetooth. Resolution varies in each camera.
- 23Game controllersExample of a special purpose device as computer games often demand fast response times
- 24Handwriting softwareHandwritten notes or paper-based text is converted into characters that can be processed by a computer.
- 25Graphic tabletsUsed mainly for drawing.A stylus is used to draw on a flat plate.Stylus feels rather more natural to draw than a mouse.
- 26Video conferencingCaptures and transmit sound and video to allow people, in different geographical locations, to see and talk to each other.
- 27Speech recognition softwareUser speaks into microphone (capture and digitalisation).The sounds of words are compared with a dictionary of sound (phonetic classification) and converted into computer-readable text
- 28Drum scannerGives high-definition images
Informações
- Descrição
- different input devices
- Criado por
- Gloria Nlemchi
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- 37
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