6.4. Getting an A+
This chapter introduces you to some of the different devices used when working with multimedia and multimedia applications. Here are some key points to remember about multimedia devices:
A flatbed scanner is the popular type of scanner and uses a technology called a charge-coupled device (CCD). The scan head on the scanner moves under the image, exposing the image to light that is captured and then converted into electrical data by the CCD, which creates the image.
The popular connection used by scanners and digital cameras is USB.
Digital cameras are measured by the quality of image they provide. The measurement unit is megapixels — millions of pixels. The larger the number of megapixels, the higher the resolution and the larger the image.
Codecs compress videos so that they do not use up as much hard disk space. To play a video on the computer, you need the same codec installed on your system that was used to compress the video.
If you are having trouble with your microphone picking up the sound around you, make sure that the microphone is set as a recording device.
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