Input outputdevicesppt
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  • Source Data Automation- automates input data near the source in order to avoid entry errors
  • Keyboards- most popular general purpose input deviceQWERTY- input data device
  • Special Purpose input devices are becoming more frequently used than in the past because of the ever changing world applications and software.
  • -magnetic ink character recognition (MICR)- reads special magnetic ink characters such as those written on the bottom of checks-optical character recognition (OCR)- reads hand printed characters-point of scale device (POS)- retail scanner that reads the code from tag and enters it into the computer system-Optical mark recognition (OMR)- reads “bubbled in” forms
  • Output- good output is easy to interpret Displays, printers, speakers=most common types of outputVirtual reality systems- tactile and olfactory output
  • -They combine powerful graphics that generate realistic images.-GPU- some graphics cards include GPU to process graphics (way to process graphics that takes the load off of video memory, RAMDAC, CPU…..
  • -Desktop systems- graphics card/video card is plugged into the motherboard-notebooks- graphics card/video card is typically integrated into the motherboard.
  • -HDTVs = 2x the resolution of traditional TV displays, sharper crisper images.-3D displays= uses polarization technologies to add depth and realism., companies such as Samsung are now creating 3D tv home systems-LCD projectors- images from computer to big screen
  • -CRT- big and bulky,being replaced by smaller, less bulky screens-LCDs are thin and flat, popular as both computers and televisions
  • -LEDs are gaining popularity as green technologies because they use less energy and do not require the use of mercury. -E-paper makes it easy to see the screen outdoors and is easier on the viewers eyes.
  • -PPM= measures speed of printer-Laser printer provides highest quality printed output
  • -Audio output has become very popular with the growth of mobile media such as smart phones and Ipods- Multimedia and gaming enthusiasts usually purchase higher quality sound systems
  • -Screen–readers read allowed text displayed on screens-Haptic Output is output that the user can feel-Scent Dome is a USB device that delivers scent output by way of delivering fragrances as commanded by the computer.-Edible output: printers have been created to print flavored pieces of paper for tasting samples sent over the internet.
  • -Peripherals increase computer capabilities-special-purpose cables and connectors are not supported by all computers-USB invented to standardize interfaces. All use common connector design
  • -Wireless technologies further expand the capabilities of a computer-Example is Bluetooth
  • -USB Mini Fridge uses power from computer via USB cord. Can fit a can of Coke-Mini USB Monitor- Tiny touch screen monitor for extra desk space. -

Input outputdevicesppt Input outputdevicesppt Presentation Transcript

  • Hardware: Input/output and I/O Devices
    Maggie Russo
    Morgan Bernstein
  • Input/output (I/O)
    Input is how data is received into a computer system which results in outputthat is displayed to the user.
    Multi-purpose devices: UPS device for signatures
  • Input Devices
    The input device captures data and enters it into the computer system.
    Source Data Automation
    General-Purpose and Special-Purpose
  • General-Purpose Input Device
    General-purpose input devices can be used in multiple computing activities.
    Keyboard
    QWERTY
    Pointing Devices select items displayed on a screen.
  • General-Purpose Input Devices Cont’d
    Users can use finger or stylus to directly select objects on a screen with the use of Touch Screens.
    Users can use multiple fingers to select objects with Multitouch Displays.
  • Special-Purpose Input Devices
    Special-purpose input devices are used in specific computing activities.
    Game controllers and joysticks, webcams, hand held scanners…
  • Special-Purpose Input Devices Cont’d
    Magnetic ink character recognition (MICR)
    Optical character recognition (OCR)
    Point-of-sale (POS) devices
    Optical mark recognition (OMR)
    Scantron reader
  • Output Devices
    Output devices allow users to view the results of the input.
    Historically visual and audio
    Virtual reality systems, new wave of output
    Displays, Printers, Speakers
  • Video Card
    Video card/graphic cards translates binary data from the CPU and turns it into a picture that video users can see.
    Graphics Processing Unit (GPU)
  • Video Card Cont’d
    Desktop systems
    Graphics Processing Unit (GPU)
    Notebook systems
    Integrated Graphics Processor
  • Display
    A display allows users to view the output on a screen.
    Display screens = monitors
    Display Options:
    High definition (HDTV)- 2xs the resolution
    3D displays- home systems
    LCD projectors
  • Display Technologies
    Cathode ray tube (CRT) display
    Reads electron beams across a fluorescent screen.
    Liquid crystal display (LCD)
    Uses liquid crystals to display images on a backlit screen
    Plasma Display
    Uses plasma gas to create light
  • Display Technologies Cont’d
    Light emitting diode (LED) display
    Uses LEDs to provide backlight
    Green Technology
    Electronic Paper (e-paper)
    Uses electric charges to display the image
    Kindle
  • Printer
    Printers create “hard copy” output
    Pages printed per minute (PPM)
    Types of Printers:
    Laser printer
    Ink Jet printer
    Photo printers
    Multifunction printers
    Plotters
    3D printer
  • Audio and Special Media Output
    Audio and Special Media Output devices provide output other than sight.
    Sounds systems:
    CD/MP3 music players
    DVD/Blu-ray disk players
    Multimedia and gaming enthusiasts
    Surround sound with subwoofers
  • Audio and Special Media Output Cont’d
    Screen-reader programs for vision impaired
    JAWS
    Haptic Output
    Vibrations
    The Scent Dome from TriSenx
    Olfactory-directed output
    Edible Output
  • Expansion
    Expansions enable computers to interact with various external devices.
    External devices = peripherals
    Ports connect to peripherals
    Universal Serial Bus (USB)
    USB 3.0 is the fastest
  • Expansion Cont’d
    Expansion Cardis used for specialty peripheral devices
    Expansion Slots are located in motherboard
    Wireless technologies
    Bluetooth
  • Innovative I/O Technologies
    There are endless possibilities for new I/O technologies
    USB Mini Fridge
    Mini USB Monitor
    USB Lamp
    Any Questions?
  • Credits and References
    Websites:
    http://portal.acm.org/citation.cfm?id=307729
    http://www.howstuffworks.com/graphics-card.htm
    http://www.thinkgeek.com/computing/accessories/96b3/
    Pictures:
    http://commons.wikimedia.org/wiki/File:Wheel_mouse.JPG
    http://commons.wikimedia.org/wiki/File:Epson-inkjet-printer.jpg
    http://upload.wikimedia.org/wikipedia/commons/6/64/Keyboard_sepia.jpg
    http://www.public-domain-photos.com/free-cliparts/computer/other/mouse_pointer_wolfram_es_03-2488.htm
    http://www.flickr.com/photos/daveiam/3584280604/
    http://commons.wikimedia.org/wiki/File:IPad-02.jpg
    http://www.flickr.com/photos/35034350906@N01/295891693
    http://commons.wikimedia.org/wiki/File:Webcam_grayscale.jpg
    http://commons.wikimedia.org/wiki/File:Barcode-scanner.jpg
    http://www.flickr.com/photos/sercasey/324341982/
    http://commons.wikimedia.org/wiki/File:Nubus_graphics_card.jpg
    http://www.behance.net/Gallery/Vector-Led-Cinema/251651
    http://www.flickr.com/photos/43602175@N06/4069260433/
    http://commons.wikimedia.org/wiki/File:USB_Plugs.jpg
    http://commons.wikimedia.org/wiki/File:PCI-USB11-card.jpg
    http://commons.wikimedia.org/wiki/File:Bluetooth_Logo_on_mouse_(backlit).jpg