Computer Science, asked by isaad46, 3 months ago

please answer this question

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Answered by garvit8281245

1

Question 2

1. trackball is used to move the pointer,you rotate the ball

2. optical mark recognition is used to test such as aptitude tests

3. bar code reader it is a scanner taht read the bar codes

4. speech input devices is used to convert a person's speech into digital form

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