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Q.

A device designed to read information encoded into a small plastic card is

A

Magnetic tape

B

Badge reader

C

Tape puncher

D

Card puncher

E

None of the above

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The first computer mouse was built by

A

Douglas Engelbart

B

William English

C

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D

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A pen shaped device which can sense light, and is used to point at spots on a video screen.

A

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Joystick

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Plotter

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None of the above

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3.

A printed document reader which scans the characters and then encodes them in a computer-compatible code for direct transmission to the computer is called

A

Optical character reader

B

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C

MICR

D

Laser scanner

E

None of the above

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Codes consisting of light and dark marks which may be optically read is known as

A

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B

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Decoder

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All of the above

E

None of the above

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5.

Information on a hard disk is usually backed-up using a?

A

CD-ROM

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Magnetic tape

C

Floppy disk

D

All of the above

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