Laser printers belong to
Answer: B
Correct answer: page printer
A laser printer composes and prints a whole page at a time, which is what makes it a page printer. Line printers and band printers produce one line at a time, and a dot matrix prints one character at a time.
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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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A bar code reader is an example of
Answer: C
Correct answer: input device
A bar code reader scans a printed code and sends the number it encodes into the computer, so it supplies data to the machine. That is what makes it an input device rather than a processing or storage one.
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In MICR, C stands for
Answer: D
Correct answer: character
MICR stands for Magnetic Ink Character Recognition, the technique used to read the numbers printed along the bottom of a cheque in magnetic ink.
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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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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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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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The _____________ pen is a small input device used to select and display objects on a screen.
Answer: C
Correct answer: Light
A light pen is held against the screen and detects the light emitted at the point it touches, which tells the computer where it is pointing. There is no such input device as an ink pen or a magnetic pen.
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Which of the following is not an output device?
Answer: C
Correct answer: Scanner
A scanner reads a document and sends the image into the computer, so it is an input device. Plotters, printers and monitors all present results to the user and are therefore outputs.
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Speed of the printer is limited by the speed of
Answer: B
Correct answer: paper movements
However fast the print mechanism itself works, no line can be printed until the paper has been advanced into position, so the mechanical movement of the paper sets the ceiling on printing speed. The cartridge holds ink or toner and does not govern the rate at which the page advances.
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