题目内容
The study of human factors related to things people use.
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These screens can be touched with more than one finger, which allows for interactions such as rotating graphical objects on the screen with your hand or zooming in and out by pinching and stretching your fingers.
Which of the following is not a type of scanning device?
Bar code readers use _______ embedded in them to read bar codes.
This reading device is used in banks to read the numbers on the bottom of checks and deposit slips.
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