Outout Devices

Question 1

What is an output device

Answer 1

An output device is any hardware device used to ser data from a computer to another device or user.

Question 2

Examples of output devices

Answer 2

Monitor (LED, LCD, CRT etc)
• Printers (all types)
• Plotters
• Projector
• LCD Projection Panels
• Computer Output Microfilm (COM)
• Speakers)
• Head Phone
• Film Recorder
• Microfiche

Question 3

Describe resolution pixel

Answer 3

Resolution pixels: Pixels are the smallest element any image

Question 4

Describe resolution pixel , size and refresh rate

Answer 4

• Resolution pixels: Pixels are the smallest element any image
• Size: The size of the monitor - The diagonal measurement of a desktop screen is typically 14 t inches.
• Refresh Rate: Total number of times per second t an image on a display is repainted or refreshed

Question 5

Printers a are divided into

Answer 5

Printers are divided into two categories:
• Impact Printers
• characters are printed on the ribbon, which is then smashed on the paper.
• Non-Impact Printers

Question 6

Describe computer output microfilm

Answer 6

Computer output microfilm is the product of copying information from electronic media onto microfilm.

single microfiche card can hold 230 images,

Question 7

Pro of computer output microfilm

Answer 7

An advantage to using computer output microfilm for documen archival is its storage capacity.

Question 8

Mention input /output devices

Answer 8

Modems
• Network cards
• Touch Screen
• Headsets (Headset consists of Speakers and Microphone. Speaker act Output Device and Microphone act as Input device)
• Facsimile (FAX) (It has scanner to scan the documer and also have printer to Print the document)
• Audio Cards / Sound Card

Question 9

Describe film recorder

Answer 9

A film recorder is a graphical output device for transferring images to photographic film from a digital source.

Question 10

Describe fax

Answer 10

fax is the telephonic transmission of scanned-in printed material (text or images), usually to a telephone number associated with a printer or other output device.

Question 11

Benefits of fax

Answer 11

Faxes are a fairly inexpensive method of sending a message
• They are simple to use and require very little training
• They allow exact copies of hand written information or images to be transmitted without having to prepare it in any special way.
• As long as the fax machine is switched on, messages can be received at any time day or night.
• They don’t need any specialist installation or cabling as they make use of the existing telephone line

Question 12

Cons of fax

Answer 12

No immediate response or feedback from the recipient
• Might dial the wrong number and send document to someone else
• If receiving machine is busy, your Fax will not be delivered, although you can set it to re-try a few times
• Quality of the document which is received is often poor and might have lost some of the fine detail.
• Can take longer time to transmit if you have many sheets of paper
• The fax machine can run out of paper without noticing it.
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