LESSON 4 ALTERNATIVE METHODS OF INPUT

LESSON 4 ALTERNATIVE METHODS OF INPUT

This lesson includes the following sections:

•  Devices for the Hand 
•  Optical Input Devices 
•  Audio-Visual (Multimedia) Input Devices 

lesson 4 Review

• List two reasons why some computer users prefer alternative methods of input over a standard keyboard or mouse.
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• List three categories of alternative input devices.
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• List two type of optical input devices and describe their uses.
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• Describe the uses for speech-recognition systems.
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• Identify two types of video input devices and their uses. 

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