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Computer Basic Information

Computer Basic Information
A file that includes an index directory to facilitate random access is

Random file
Serial file
Indexed file
None of these
Sequential file

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Computer Basic Information
The EAM device that does not use a control panel is the:

None of these
collator
sorter
interpreter
reproducer

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Computer Basic Information
The barcode which is used on all types of items, is read by a scanning device directly into the computer. What is the name of this scanning device?

Wand
None of these
Laser scanner
OCR
MICR

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Computer Basic Information
Which is not necessary when using bar codes in supermarkets?

Check digit on the bar code
Price on the shelf
Point-of sale (POS) terminal
Price on the goods
None of these

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Computer Basic Information
A dot-matrix printer

has a speed of 1000 cps
is an output device
is an input device
None of these
cannot print alphabet

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Computer Basic Information
The analog computer measures dimensions and its circuits use the differential and integral equations of continuous variables. The digital computer counts units and its circuits use

Logic gates
None of these
Boolean algebra
Bayes' theorem
Discrete switches

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