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Input /Output Devices Questions and Answers

31.

The joystick is a ____________ stick that moves the graphic cursor in the direction the stick is moved.

Answer: D

Correct answer: Vertical

A joystick is a stick standing upright in a base; tilting it from the vertical in any direction moves the cursor that way. The other three words describe orientations that would leave nothing to tilt.

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32.

The ________ may also be called the screen or monitor.

Answer: D

Correct answer: display

The display is the general term for the screen on which output appears; monitor and screen are the everyday names for the same thing. A printer produces output on paper and a hard disk stores it.

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Answer: B

Correct answer: computer gaming

A joystick reports the direction and amount by which it is pushed, which suits continuous control of movement - steering, flying, aiming - and that is chiefly what games need. Text entry needs a keyboard and drawing needs a mouse or a graphics tablet.

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35.

The pattern of printed lines on most products are called

Answer: D

Correct answer: bar code

The pattern of parallel lines of varying width printed on packaged goods is a bar code; it encodes the product number for a scanner to read. OCR reads ordinary printed characters, and a scanner is the device that reads the code rather than the code itself.

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38.

Dot-matrix, Deskjet, Inkjet and Laser are all types of which computer peripherals?

Answer: A

Correct answer: Printers

Dot-matrix, deskjet, inkjet and laser are the four common printing technologies, distinguished by how they put ink or toner on paper.

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39.

A light sensitive device that converts drawing, printed text or other images into digital form is

Answer: C

Correct answer: Scanner

A scanner shines light on a page and converts the reflected pattern into a digital image, which is exactly what the question describes. A plotter draws on paper and OMR reads only pencil marks in fixed positions rather than whole images.

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40.

What type devices are computer speakers or headphones?

Answer: D

Correct answer: Output

Speakers and headphones deliver sound from the computer to the listener, so they carry information outwards. A microphone would be the corresponding input device.

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