Chapter 6 Input and Output
Overview • Define Input • Describe Keyboard Entry • Discuss Pointing Devices • Describe Scanning Devices • Discuss Image and Audio Capturing Devices • Define Output
Overview • Discuss Monitor Features and Types • Define Printing Features and Types • Discuss Audio Devices • Discuss Video Devices • Define Combination Input/OutputDevices • Discuss Ergonomics
What is Input? • Translate Words, Sounds, Images, Actions • Into a Form that the System Unit Can Process • Input Devices Include: • Keyboards • Mice and Pointing Devices • Scanning Devices • Audio-input devices
Keyboard Entry • Traditional • Notebook • Virtual • Tablets, Smartphones • Thumb • Smartphones, Handhelds • Predictive Text • Predict Word Being Typed as It’s Typed
Pointing Devices • Mouse • Trackball, Trackpad • Touchscreen • Game Pad, Joystick • Simulation
Pointing Devices • Stylus • Handwriting Recognition • Translates Handwritten Characters • Graffiti
Scanning Devices • Optical • Flatbed • Document • Portable • Card Readers • Magnetic
Scanning Devices • Bar Code Readers • Uses Laser Beam to Read Bar Codes • Vertical Lines / Spaces of Different Widths • RFID Readers • Reads Tag Via Radio Waves • Uses • Manage Inventory • Toll Payments
Scanning Devices • Character and Mark Recognition Devices • Magnetic-ink Character Recognition • OCR (Optical-character Recognition) • Characters’ Shapes Determined • Converted Into Editable Text • OMR (Optical-mark Recognition)
Image Capturing Devices • Digital Cameras • Records Images Digitally • Digital Video Cameras • Records Motion Digitally • Webcam
Audio-Input Devices • Convert Sound To Digital • Human Voice, Music • Voice Recognition Systems Use • Microphone • Sound Card • Special Software
Audio-Input Devices • Convert Sound To Digital • Human Voice, Music • Voice Recognition Systems Use • Microphone • Sound Card • Special Software • Contextual Use • Challenges • ESL, Women, Accents, Children
Mobile Data Collection • Collect Data Where Transaction Occurs • Capture Data Directly From Source • Data Transfer • Wireless / Docking Station • Advantages • Saves Time • Lowers Labor Cost • Reduces Errors • Available Sooner for Analysis
What is Output? • Processed Data or Information • Types • Text • Graphics • Audio • Video
Monitors • AKA Screen or Display • Features • Resolution • Pixel (Picture Element) • Dot Pitch • Contrast Ratio • Size • Aspect Ratio
Monitors • Flat-panel Monitors • Most Widely Used Today • Thinner • More Portable • Require Less Power to Operate • Liquid Crystal Display • TFT-LC • AMOLED
Monitors • E-book Readers • Kindle, Nook • Digital/Interactive Whiteboards • High-definition Television (HDTV) • LCD – Brighter Screen, Longer Life • Plasma – Rich Color, Low Lighting, Wide Angle • LED – Thinner, Bright Lighting, Less Power
Monitors • Bit Depth • Number of Bits Used to Store Pixel Data • Determines Number of Colors Displayed • 32-bit Video Card • 232 = 4.3 Billion Colors
Printers • Hardcopy • Features • Resolution • DPI (Dots per Inch) • Color • Speed • PPM (Pages per Minute) • Memory • Duplex Printing
Printers • Ink-jet • Laser • Personal or Shared • Cloud • Thermal • Plotters
Audio and Video Devices • Speakers and Headsets • Portable Media Players • AKA Digital Media Players • Apple iPod, Creative Zen • Mobile Digital Television (Mobile DTV) • Watch TV on Computer, Smartphone
Combination Devices • Multifunctional (MFD) • Scan, Print, Fax, Copy • Internet Telephones • Voice-over IP (VoIP) • AKA Internet Telephony • Vonage • MagicJack • Skype
Combination Devices • Robots • Artificial Intelligence (AI) • Simulate Human Senses, Thought Processes, Actions • Robotics • Perception System • Industrial • Mobile • Household
Combination Devices • Virtual Reality Headgear and Gloves • Simulate Three-dimensional Environment • Stereoscopic Screens • Sensors Collect Data About Hand Movements • Create Immersive Experience
Ergonomics • Human Factors Related to Things People Use • Fit the Task to the User to Avoid: • Eyestrain and Headache • Back and Neck Pain • Repetitive Strain Injury • Carpal Tunnel Syndrome
Careers in IT • Technical Writer • Prepare Instruction Manuals, Technical Reports • Translate Technical Information • Easily Understandable Instructions or Summaries • Communications / Journalism / English Degree • Specialization in, or Familiarity with, a Technical Field • Annual Salary of $41,000 - $78,000
