© Paradigm Publishing Inc. 3-1 Chapter 3 Output and Storage

© 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

© Paradigm Publishing Inc. 3-3 Output Types of Output

© Paradigm Publishing Inc. 3-4 Output Types of Output – Text – characters and numbers used to create words, sentences, and paragraphs

© 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

© 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

© Paradigm Publishing Inc. 3-7 Output Output Devices and Media

© 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

© 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

© Paradigm Publishing Inc Display Devices Monitor –most common soft-copy output device –consists of a viewing screen and electronic parts that show information on a screen

© Paradigm Publishing Inc 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.

© Paradigm Publishing Inc Display Devices Monitor Performance Determined 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

© Paradigm Publishing Inc Display Devices Monitor Ergonomics Correct positioning when using a monitor can reduce physical fatigue and discomfort.

© Paradigm Publishing Inc Display Devices Other display devices

© Paradigm Publishing Inc Display Devices Other display devices –Wearable computers – devices such as headsets, eyeglasses, watches, etc., free workers from working in front of a computer

© Paradigm Publishing Inc 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

© Paradigm Publishing Inc 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

© Paradigm Publishing Inc Printers What types of printers are available?

© Paradigm Publishing Inc Printers What types of printers are available? –Impact printers dot-matrix and line printers

© Paradigm Publishing Inc 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

© Paradigm Publishing Inc 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

© Paradigm Publishing Inc 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

© Paradigm Publishing Inc 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.

© Paradigm Publishing Inc 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.

© Paradigm Publishing Inc Printers An ink jet printer produces output by spraying tiny ink droplets onto the paper or other medium to form text and images.

© Paradigm Publishing Inc Printers A laser printer produces output in a manner similar to that of a copy machine.

© Paradigm Publishing Inc Printers Other printers

© Paradigm Publishing Inc Printers Other printers –Thermal printers – use heat to transfer an impression onto paper

© Paradigm Publishing Inc Printers Other printers –Thermal printers – use heat to transfer an impression onto paper –Plotters – produce large-sized high-quality documents

© Paradigm Publishing Inc 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

© Paradigm Publishing Inc 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

© Paradigm Publishing Inc Printers Other printers

© Paradigm Publishing Inc Printers Other printers –Postage printers – weigh items, print postage, and meter postage account

© Paradigm Publishing Inc Printers Other printers –Postage printers – weigh items, print postage, and meter postage account –Portable printers – battery powered, small, light- weight

© Paradigm Publishing Inc 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

© Paradigm Publishing Inc Audio Output –Built-in speakers produce warning sounds.

© Paradigm Publishing Inc Audio Output –Built-in speakers produce warning sounds. –Sound cards produce high-quality sound through external speakers for many applications using music, voice, etc.

© Paradigm Publishing Inc 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.

© Paradigm Publishing Inc 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.

© Paradigm Publishing Inc Storage Devices and Media Examples of commonly used file extensions

© Paradigm Publishing Inc Storage Devices and Media More examples of commonly used file extensions

© Paradigm Publishing Inc Storage Devices and Media A storage device is hardware that houses a storage medium on which data is recorded.

© Paradigm Publishing Inc 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

© Paradigm Publishing Inc 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

© Paradigm Publishing Inc 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

© Paradigm Publishing Inc Magnetic Storage Devices and Media Floppy disk handling and storage guidelines

© Paradigm Publishing Inc 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.

© Paradigm Publishing Inc 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.

© Paradigm Publishing Inc 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

© Paradigm Publishing Inc 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

© Paradigm Publishing Inc 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.

© Paradigm Publishing Inc Optical Storage Devices How do optical devices store data?

© Paradigm Publishing Inc Optical Storage Devices How do optical devices store data? –High-intensity laser records data by burning indentions (pits) onto disc surface.

© Paradigm Publishing Inc 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.

© Paradigm Publishing Inc 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.

© Paradigm Publishing Inc Optical Storage Devices An optical disc drive reads binary data stored on an optical disc.

© Paradigm Publishing Inc 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.

© Paradigm Publishing Inc Optical Storage Devices Types and storage capacities of optical discs

© Paradigm Publishing Inc 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 MB of information

© Paradigm Publishing Inc Optical Storage Devices (CD-RW) Compact Disc, Rewritable

© Paradigm Publishing Inc Optical Storage Devices (CD-RW) Compact Disc, Rewritable –can be erased and rewritten multiple times

© Paradigm Publishing Inc Optical Storage Devices (CD-RW) Compact Disc, Rewritable –can be erased and rewritten multiple times –CD-RW drive and special software required

© Paradigm Publishing Inc Optical Storage Devices (CD-RW) Compact Disc, Rewritable –can be erased and rewritten multiple times –CD-RW drive and special software required –can hold MB of information

© Paradigm Publishing Inc Optical Storage Devices DVD-R Discs (Digital Versatile Disc, Recordable)

© Paradigm Publishing Inc Optical Storage Devices DVD-R Discs (Digital Versatile Disc, Recordable) –can be recorded on only one time

© Paradigm Publishing Inc 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

© Paradigm Publishing Inc 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

© Paradigm Publishing Inc 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

© Paradigm Publishing Inc Optical Storage Devices DVD-RW Discs (Digital Versatile Disc, Rewritable)

© Paradigm Publishing Inc Optical Storage Devices DVD-RW Discs (Digital Versatile Disc, Rewritable) –allows data to be erased and recorded over many times without damaging disc

© Paradigm Publishing Inc 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

© Paradigm Publishing Inc 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

© Paradigm Publishing Inc Optical Storage Devices Care instructions for optical discs

© Paradigm Publishing Inc Optical Storage Devices Steps for cleaning an optical disc

© Paradigm Publishing Inc 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.

© Paradigm Publishing Inc 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

© Paradigm Publishing Inc Large Computer System Storage Devices WORM (write once, read many) disk

© Paradigm Publishing Inc Large Computer System Storage Devices WORM (write once, read many) disk –used for very high capacity storage

© Paradigm Publishing Inc Large Computer System Storage Devices WORM (write once, read many) disk –used for very high capacity storage –mainly found in mainframe applications

© Paradigm Publishing Inc 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

© Paradigm Publishing Inc 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

© Paradigm Publishing Inc On the Horizon Based on the information presented in this chapter and your own experience, what do you think is on the horizon?