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1.4 PERIPHERAL DEVICES

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1. Peripheral devices are connected to the computer ______. a) externally b) internally c) output d) input

2. _____ devices accept data and instructions from the user. a) Input b) Output c) Peripheral d) Internal

3. The keyboard in most common use is the _________ board. a) QWERTY b) QWSADF c) BGHYTF d) ASDCX e) YHNBG

4. Generally standard keyboard has _________ keys. a) 104 b) 150 c) 102 d) 56

5. A mouse is an electro- _________ hand-held device a) mechanical b) electrical c) optical d) peripheral

6. An input device that utilizes a light-sensitive detector to select objects on a display screen. a) Light pen b) Mouse c) Printer d) Ploter

7. The bar-code reader is actually just a special type of_________ a) image scanner b) printer c) output device d) plotter

8. image scanner. a) ? b) ?

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