Input Devices

Beschreibung

Computing
izzykersley01
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izzykersley01
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Zusammenfassung der Ressource

Input Devices
  1. Keyboard
    1. Advantages: easy to use, little training, come with computer
      1. Disadvantages: easy to make mistakes, possible R.S.I, difficult to use for disabled users
      2. Mouse
        1. Advantages: ideal for desktop computers, little training, comes with computer
          1. Disadvantages: possible R.S.I, requires a flat space near computer
          2. Touchpad
            1. Advantages: useful alternative to mouse, fixed position, short finger movements
              1. Disadvantages: gloves cannot be worn, sensor affected by liquid
              2. Joystick
                1. Advantages: better gaming experience
                  1. Disadvantages: requires more skill to use, can easily break
                  2. Concept Keyboard
                    1. Advantages: faster access to certain areas, waterproof
                      1. Disadvantages: limited to options on keyboard, poor for numerical/text input
                      2. Touch Screen
                        1. Advantages: easy to use, no extra hardware (like a mouse) needed, software can alter what is on the screen
                          1. Disadvantages: not always accurate, more expensive, tiring, not robust
                          2. Scanner
                            1. Advantages: accurately produce high quality images, image/text can be used in electronic documents
                              1. Disadvantages: take up a lot of memory, possible loss of image quality, (dependent on original quality of image)
                              2. Graphics Tablet
                                1. Advantages: more natural images can be draw with accuracy
                                  1. Disadvantages: expensive, not useful for general selection work
                                  2. Microphone
                                    1. Advantages: input sound easily, quicker input of data
                                      1. Disadvantages: words can be interpreted incorrectly, quality of sound depends on background noise
                                      2. Webcam
                                        1. Advantages: can already be built into computer, new ways of communication, security
                                          1. Disadvantages: not always good quality image
                                          2. Barcode Reader
                                            1. Advantages: all changes to product uploaded to a database, quick access to data
                                              1. Disadvantages: potential misinterpretation of data
                                              2. Optical Mark Reader (OMR)
                                                1. Advantages: fast, only one computer needed, more accurate
                                                  1. Disadvantages: not always read correctly, not suitable for text input
                                                  2. Biometric Devices
                                                    1. Advantages: accurate, difficult to hack (finger print needed), quick
                                                      1. Disadvantages: possible misread data
                                                      2. Sensors
                                                        1. Advantages: automatic, detect physical quantities outside computer
                                                          1. Disadvantages: must have an Analogue to Digital Converter (ADC) to work
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