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Transcript of © Paradigm Publishing Inc. 3-1 Chapter 3 Output and Storage.
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© Paradigm Publishing Inc. 3-1
Chapter 3Output and Storage
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© Paradigm Publishing Inc. 3-2
Presentation Overview
• Output• Display Devices• Printers• Audio Output• Storage Devices and Media• Magnetic Storage Devices and Media• Optical Storage Devices• Large Computer System Storage Devices
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© Paradigm Publishing Inc. 3-3
Output
Types of Output
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Output
Types of Output– Text – characters and numbers used to create words, sentences, and paragraphs
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© Paradigm Publishing Inc. 3-5
Output
Types of Output– Text – characters and numbers used to
create words, sentences, and paragraphs– Audio – any sound, including speech and music
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© Paradigm Publishing Inc. 3-6
Output
Types of Output– Text – characters and numbers used to
create words, sentences, and paragraphs– Audio – any sound, including speech and music– Video – motion images, similar to those seen on a television or movie screen
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© Paradigm Publishing Inc. 3-7
Output
Output Devices and Media
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© Paradigm Publishing Inc. 3-8
Output
Output Devices and Media– Output device – any hardware device that makes information available to a user
– monitors, printers, plotters
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© Paradigm Publishing Inc. 3-9
Output
Output Devices and Media– Output device – any hardware device that makes information available to a user
– monitors, printers, plotters
– Output medium – any medium on which information is recorded– paper, plastic film, magnetic tape
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Display Devices
Monitor– most common
soft-copy output device
– consists of a viewing screen and electronic parts that show information on a screen
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© Paradigm Publishing Inc. 3-11
Display Devices
Monitor Resolution– Number of pixels
determines quality.– A pixel is a single dot
of anything displayed on a screen.
– More pixels cause higher resolution and more detailed images.
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Display Devices
Monitor PerformanceDetermined by– Video card – more
VRAM means truer color and faster speed
– Resolution – more pixels mean sharper graphics
– Refresh rate – faster rate means less screen flicker
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Display
DevicesMonitor ErgonomicsCorrect positioning when using a monitor can reduce physical fatigue and discomfort.
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© Paradigm Publishing Inc. 3-14
Display Devices
Other display devices
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Display Devices
Other display devices– Wearable computers – devices such as
headsets, eyeglasses, watches, etc., free workers from working in front of a computer
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© Paradigm Publishing Inc. 3-16
Display Devices
Other display devices– Wearable computers – devices such as
headsets, eyeglasses, watches, etc., free workers from working in front of a computer
– Television displays – HDTV provides a wider screen and higher resolution
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© Paradigm Publishing Inc. 3-17
Display Devices
Other display devices– Wearable computers – devices such as
headsets, eyeglasses, watches, etc., free workers from working in front of a computer
– Television displays – HDTV provides a wider screen and higher resolution
– Screen projector – projects images on a screen to large audiences
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Printers
What types of printers are available?
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Printers
What types of printers are available?
– Impact printers• dot-matrix and line printers
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© Paradigm Publishing Inc. 3-20
Printers
What types of printers are available?
– Impact printers• dot-matrix and line printers
– Nonimpact printers
• ink-jet printers, laser printers, thermal printers, and plotters
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© Paradigm Publishing Inc. 3-21
Printers
What types of printers are available?
– Impact printers• dot-matrix and line printers
– Nonimpact printers• ink-jet printers, laser printers, thermal printers, and plotters
– Special-purpose nonimpact printers• postage printers, laser printers, and photo printers
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© Paradigm Publishing Inc. 3-22
Printers
What types of printers are available?
– Impact printers• dot-matrix and line printers
– Nonimpact printers• ink-jet printers, laser printers, thermal printers, and plotters
– Special-purpose nonimpact printers• postage printers, laser printers, and photo printers
– Multifunction device• facsimile machine
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Printers
Portrait format’s (at left) name comes from the fact that traditional portraits are taller than they are wide. To illustrate a landscape (above), wider images are usually more useful.
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Printers
Before striking the ribbon, the dot matrix printer extends the correct combination of pins to form a specific character.
As with the display of pixels on a monitor, the more pins the printer uses, the sharper the printed letters.
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Printers
An ink jet printer produces output by spraying tiny ink droplets onto the paper or other medium to form text and images.
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Printers
A laser printer produces output in a manner similar to that of a copy machine.
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Printers
Other printers
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Printers
Other printers
– Thermal printers – use heat to transfer an impression onto paper
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Printers
Other printers
– Thermal printers – use heat to transfer an impression onto paper
– Plotters – produce large-sized high-quality documents
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© Paradigm Publishing Inc. 3-30
Printers
Other printers
– Thermal printers – use heat to transfer an impression onto paper
– Plotters – produce large-sized high-quality documents
– Photo printers – high-quality ink-jet printers print photos
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© Paradigm Publishing Inc. 3-31
Printers
Other printers
– Thermal printers – use heat to transfer an impression onto paper
– Plotters – produce large-sized high-quality documents
– Photo printers – high-quality ink-jet printers print photos
– Label printers – use heat to print on adhesive material
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Printers
Other printers
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Printers
Other printers– Postage printers – weigh items, print postage,
and meter postage account
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Printers
Other printers– Postage printers – weigh items, print postage,
and meter postage account– Portable printers – battery powered, small, light-
weight
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© Paradigm Publishing Inc. 3-35
Printers
Other printers– Postage printers – weigh items, print postage,
and meter postage account– Portable printers – battery powered, small, light-
weight– Facsimile machines – can send and receive
copies of documents through telephone lines
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Audio Output
– Built-in speakers produce warning sounds.
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Audio Output
– Built-in speakers produce warning sounds.– Sound cards produce high-quality sound through
external speakers for many applications using music, voice, etc.
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Audio Output
– Built-in speakers produce warning sounds.– Sound cards produce high-quality sound through
external speakers for many applications using music, voice, etc.
– Speaker headsets position miniature speakers over the ears to minimize sound distraction.
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© Paradigm Publishing Inc. 3-39
Audio Output
– Built-in speakers produce warning sounds.– Sound cards produce high-quality sound through
external speakers for many applications using music, voice, etc.
– Speaker headsets position miniature speakers over the ears to minimize sound distraction.
– Voice output produces synthesized human speech.
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Storage Devices and Media
Examples of commonly used file extensions
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Storage Devices and Media
More examples of commonly used file extensions
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Storage Devices and Media
• A storage device is hardware that houses a storage medium on which data is recorded.
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Storage Devices and Media
• A storage device is hardware that houses a storage medium on which data is recorded.
• Magnetic devices– floppy disk
– hard disk
– tape cartridge
– USB flash drive
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Storage Devices and Media
• A storage device is hardware that houses a storage medium on which data is recorded.
• Magnetic devices • Optical devices– floppy disk – compact disc (CD)
– hard disk – digital versatile
– tape cartridge disc (DVD)
– USB flash drive
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Magnetic Storage Devices and Media
Floppy Disk– a thin, circular
Mylar® wafer sandwiched between two sheets of special cleaning tissue inside a plastic case
– stores data along the tracks and sectors on the floppy disk
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Magnetic Storage Devices and Media
Floppy disk handling and storage guidelines
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Magnetic Storage Devices and Media
The process of formatting a floppy disk results in the disk being arranged into tracks and sectors. Data is stored in sectors along the tracks.
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Magnetic Storage Devices and Media
A hard drive contains one or more hard disks on which data is stored. When activated, read/write heads move in and out between the disks to record and/or read data.
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Magnetic Storage Devices and Media
USB Flash Drive
– a magnetic storage device that plugs into a USB port of a computer
– about the size of a car key, can store up to several gigabytes of data
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Magnetic Storage Devices and Media
Tape Cartridges and Tape Drives
– magnetically coated tape in a small plastic housing
– used mainly for backing up the contents of a hard drive
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Optical Storage Devices
The CD is loaded printed side up, and the holes in the tray allow the laser to read the bottom surface of the disc once the tray is closed.
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Optical Storage Devices
How do optical devices store data?
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Optical Storage Devices
How do optical devices store data?
– High-intensity laser records data by burning indentions (pits) onto disc surface.
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Optical Storage Devices
How do optical devices store data?
– High-intensity laser records data by burning indentions (pits) onto disc surface.
– Flat, unburned areas on disc are called lands.
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© Paradigm Publishing Inc. 3-55
Optical Storage Devices
How do optical devices store data?
– High-intensity laser records data by burning indentions (pits) onto disc surface.
– Flat, unburned areas on disc are called lands.– Two low-intensity lasers read and write each bit
as a digit 0 and each land as a digit 1.
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Optical Storage Devices
An optical disc drive reads binary data stored on an optical disc.
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Optical Storage Devices
Information is stored on a series of sectors along a single track that spirals outward from the center to the outer edge of the optical disc.
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Optical Storage DevicesTypes and storage capacities of optical discs
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Optical Storage Devices
(CD-R) Compact Disc, Recordable– allows PC to record (burn)
information on a CD-R disc
– writes once to disc, and resulting CD can be read in a standard CD-ROM drive
– can hold 650-700 MB of information
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Optical Storage Devices
(CD-RW) Compact Disc, Rewritable
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Optical Storage Devices
(CD-RW) Compact Disc, Rewritable
– can be erased and rewritten multiple times
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Optical Storage Devices
(CD-RW) Compact Disc, Rewritable
– can be erased and rewritten multiple times– CD-RW drive and special software required
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Optical Storage Devices
(CD-RW) Compact Disc, Rewritable
– can be erased and rewritten multiple times– CD-RW drive and special software required– can hold 650-700 MB of information
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Optical Storage Devices
DVD-R Discs (Digital Versatile Disc, Recordable)
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Optical Storage Devices
DVD-R Discs (Digital Versatile Disc, Recordable)
– can be recorded on only one time
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Optical Storage Devices
DVD-R Discs (Digital Versatile Disc, Recordable)
– can be recorded on only one time
– can be read by most commercial DVD-ROM players
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Optical Storage Devices
DVD-R Discs (Digital Versatile Disc, Recordable)
– can be recorded on only one time
– can be read by most commercial DVD-ROM players
– can hold up to 4.7 GB of data
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Optical Storage Devices
DVD-R Discs (Digital Versatile Disc, Recordable)
– can be recorded on only one time
– can be read by most commercial DVD-ROM players
– can hold up to 4.7 GB of data
– new format called Blu-ray can store 27 GB of data
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Optical Storage Devices
DVD-RW Discs (Digital Versatile Disc, Rewritable)
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Optical Storage Devices
DVD-RW Discs (Digital Versatile Disc, Rewritable)
– allows data to be erased and recorded over many times without damaging disc
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Optical Storage Devices
DVD-RW Discs (Digital Versatile Disc, Rewritable)
– allows data to be erased and recorded over many times without damaging disc
– can store up to 4.7 GB of data
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Optical Storage Devices
DVD-RW Discs (Digital Versatile Disc, Rewritable)
– allows data to be erased and recorded over many times without damaging disc
– can store up to 4.7 GB of data– can be read by most commercial CD-ROM players
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Optical Storage Devices
Care instructions for optical discs
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Optical Storage Devices
Steps for cleaning an optical disc
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Large Computer System Storage Devices
Magnetic Disk Storage
– Disk drive houses many hard disks in a plastic container.
– Read/write heads record information and store data by moving among disks.
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Large Computer System Storage Devices
Magnetic Tape Storage
– removable reels of magnetic tape
– data is stored and accessed sequentially along full length of tape
– used primarily for backup and storage of data
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Large Computer System Storage Devices
WORM (write once, read many) disk
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Large Computer System Storage Devices
WORM (write once, read many) disk
– used for very high capacity storage
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Large Computer System Storage Devices
WORM (write once, read many) disk
– used for very high capacity storage– mainly found in mainframe applications
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Large Computer System Storage Devices
WORM (write once, read many) disk
– used for very high capacity storage– mainly found in mainframe applications– ideal for storing archival-type material
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Large Computer System Storage Devices
WORM (write once, read many) disk
– used for very high capacity storage– mainly found in mainframe applications– ideal for storing archival-type material– usually readable only on drive on which data were
written
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On the Horizon
Based on the information presented in this chapter and your own experience, what do you think is on the horizon?