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