Computer Science - Computer Fundamentals

11. 

A hand-held device for optically reading bar codes on goods, labels & shelves is

A. Wand
B. Touch tablet
C. Mouse
D. Light pen
E. None of the above

Answer: Option A

Explanation:

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12. 

In analog computer

A. Input is first converted to digital form
B. Input is never converted to digital form
C. Output is displayed in digital form
D. All of the above
E. None of the above

Answer: Option B

Explanation:

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13. 

The decimal equivalent of the binary number 11100001111 is

A. 1806
B. 1807
C. 2806
D. All of the above
E. None of the above

Answer: Option B

Explanation:

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14. 

A disk storage medium in the form of an assembly containing a single rigid magnetic disk permenently is

A. fixed disk
B. disk cartridge
C. card punch
D. card reader
E. None of the above

Answer: Option B

Explanation:

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15. 

The benefit of using computers are that

A. Computers are very fast and can store huge amounts of data
B. Computers produce accurate output even when the input is incorrect
C. Computers are designed to the inflexible
D. All of the above
E. None of the above

Answer: Option A

Explanation:

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