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Input and Output Devices Overview

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Questions and Answers

What is the primary function of a scanner?

To digitize images for computer editing and display (correct)

To enhance the resolution of printed images

To print hard copies of documents

To facilitate communication between network devices

Which statement best describes the difference between a photocopy machine and a scanner?

Both devices operate at the same speed and image quality.

A scanner can create editable and high-resolution images, while a photocopy machine cannot. (correct)

A photocopy machine can store images directly on the computer.

Both are used primarily to print images onto paper.

How does a router facilitate data transmission?

By storing data on external devices

By routing data packets to the correct location (correct)

By enhancing the resolution of images

By converting digital images into printed forms

Which feature distinguishes a printer from a scanner?

<p>A printer generates hard copies, while a scanner digitizes images.</p> Signup and view all the answers

What limitation does a photocopy machine have compared to a scanner?

<p>It does not allow for image editing.</p> Signup and view all the answers

Study Notes

Scanners

Scanners are input devices that convert images to digital format for computers.
Scanners digitize information from various sources like photographs, posters, magazines.
Optical Character Recognition (OCR) converts documents to text that can be edited in a computer.
Scanners operate relatively slower than photocopy machines.
Scanned images can be stored on computers and sent via email.
The scanned images can be edited.

Photocopy Machines

Photocopy machines produce copies of documents at high resolution.
Photocopy machines develop images of low resolution.
Photocopy machines operate faster than scanners.
The images from photocopy machines cannot be directly stored in the computer.
The images must be sent to a computer.
Images from photocopy machines cannot be edited.

Printers

Printers are output devices used to generate hard copies (printed output) from files stored electronically.
Printers take data from computer or other devices.
Printers print various document types (e.g., text, images).
Printers are external hardware devices.

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Description

This quiz covers essential information about scanners, photocopy machines, and printers, focusing on their functions, characteristics, and differences. Understand how these devices convert and manage images and documents in the digital world. Test your knowledge about input and output devices used in computing.