Chapter 5 Input & Output Professor Michael J. Losacco CIS 1110 – Using Computers Overview Chapter 5 Describe Types of Input Identify Types of Pointing Devices Explain How Voice Recognition Works Describe Types of Scanners Identify the Three Output Types Identify Devices For Physical Challenges 2/48 Input Device Chapter 5 Hardware to Enter Data & Instructions Data Text, Numbers, Images, Audio, Video Instructions Programs, Commands, User Responses 3/48 Keyboard Chapter 5 Sections Typing Area Numeric Keypad Function Keys Special Keys Wired Uses USB Wireless Bluetooth, IrDA 4/48 Keyboard Chapter 5 Mobile Devices Smaller Fewer Keys Predictive Text Predict Word Being Typed as It’s Typed Allows for Faster Typing 5/48 Pointing Devices Chapter 5 Mouse Fits Under Palm of Hand Controls Movement of On Screen Pointer Pointer Shapes Indicate Current Function Most Widely Used on Desktop Computers Wired or Wireless 6/48 Pointing Devices Chapter 5 Notebooks Touchpad Sensitive to Pressure & Motion Pointing Stick Shaped Like Pencil Eraser 7/48 Pointing Devices Chapter 5 Touch Screen Touch Sensitive Display Often Used with Kiosks Touch Pad 8/48 Pointing Devices Chapter 5 Pen Digital / Stylus Uses Pressure to Write & Draw As Legal as Ink Signature 9/48 Pointing Devices Chapter 5 Pen Handwriting Recognition Translates Handwritten Characters Graffiti 10/48 Voice Chapter 5 Recognition Mechanics Step 1. User dictates text into microphone. Step 2. Analog-to-digital converter (ADC) translates sound waves into digital measurements including pitch, volume, silences, and phonemes. 10010111010110101100001101 Step 4. Software presents user with a list of choices or uses a natural language component to predict most likely match. User may correct any selection made by software. Step 3. Software compares spoken measurements with those in its database to find a match or list of possible matches. Matches yore, your, you’re right, rite, write 11/48 Voice Chapter 5 Recognition Challenges 80% Accuracy ESL Speakers Women (High-pitched Voices) People with Accents Children 12/48 Controllers Chapter 5 Gaming & Simulation Gamepad Joystick Wheel Light Gun Dance Pad Motion-sensing 13/48 Smartphone Chapter 5 Navigation Receiver Keyboard Microphone Camera USB Sync 14/48 Digital Camera Chapter 5 Resolution Sharpness & Clarity of Image Pixel Single Point in Electronic Image More Pixels Results in Better Image Quality 15/48 Music Chapter 5 Record Compose Mix Edit 16/48 Video Chapter 5 Video Capture Full-motion Recording into Computer PC Camera Record, Edit, & Capture Video Web Cam Video Camera Output Displayed on Web Videoconferencing Whiteboard 17/48 Scanning Chapter 5 Light-sensing Device Reads Printed Text & Graphics Flatbed Sheet-fed Handheld Drum 18/48 Scanning Chapter 5 Image Processing AKA Imaging Capture, Store, View, Print, & Edit Images Convert Paper into Electronic Document OCR (Optical Character Recognition) Characters’ Shapes Determined Converts Into Editable Text OMR (Optical Mark Recognition) Reads Hand-drawn Pencil Marks 19/48 Scanning Chapter 5 Bar Code Uses Laser Beam to Read Bar Codes Vertical Lines / Spaces of Different Widths Symbology 1/300 v. 1/3,000,000 20/48 Scanning Chapter 5 RFID Reads Tag Via Radio Waves Uses Manage Inventory Toll Payments Gauge Tire Pressure Airline Baggage Magnetic Stripe Reads Magnetic Stripe on Back of Card 21/48 Mobile Data Collection Chapter 5 Collect Data Where Transaction Occurs Capture Data Directly From Source Data Transfer Wireless / Docking Station Uses Grocery Stores Restaurants Warehouses Outdoors 22/48 Mobile Data Collection Chapter 5 Advantages: Saves Time Lowers Labor Cost Reduces Errors Eliminates Extra Handling Available Sooner for Analysis 23/48 Biometrics Chapter 5 Authenticates Person’s Identity Verifies Personal Characteristic Fingerprint Hand Geometry Shape & Size of Person’s Hand Iris Recognition Blood Vessel Patterns in Eye Face Recognition Voice Recognition 24/48 Terminals Chapter 5 Send / Receive Data To / From Host POS (Point-Of-Sale) Record Purchases Process Credit / Debit Update Inventory ATM (Automated Teller Machine) Self-service Banking Machine 25/48 Physically Challenged Chapter 5 Keyguard Large Key Keyboards Head-mounted Pointer Controls Pointer on Screen Gesture Recognition Computerized Implant Devices 26/48 Output Chapter 5 Data Processed into a Useful Form AKA Information 27/48 Display Devices Chapter 5 Monitor Packaged as Separate Component Quality Resolution Response Time Brightness Dot Pitch Diagonal Distance Between Pixels Contrast Ratio Difference of Brightest White & Darkest Black 28/48 Display Devices Chapter 5 LCD (Liquid Crystal Display) Crystals Between Two Sheets of Material Plasma Applies Voltage to Layer of Gas Larger Screen Size More Expensive 29/48 Display Devices Chapter 5 Video Card AKA Graphics Card or Video Adapter 30/48 Display Devices Chapter 5 Bit Depth Number of Bits Used to Store Pixel Data Determines Number of Colors Displayed 32-bit Video Card 232 = 4.3 Billion Colors 31/48 Display Devices Chapter 5 Resolution Number of Horizontal / Vertical Pixels Sharpness & Clarity of Image Higher Resolution Sharper Image More can be Displayed on Monitor Some Elements Smaller 32/48 Printers Chapter 5 Produces Text & Graphics on Paper Result is Hard Copy AKA Printout Portrait Orientation Orientations Portrait Landscape Landscape Orientation 33/48 Printers Chapter 5 Resolution Sharpness & Clarity Measured by DPI (Dots per Inch) Speed Measured by PPM (Pages per Minute) 34/48 Printers Chapter 5 Non-impact Doesn’t Strike Paper Types Ink-jet Laser Thermal Photo Label Plotter Portable 35/48 Non-impact Printers Chapter 5 Ink-jet Sprays Tiny Drops of Ink onto Paper 36/48 Non-impact Printers Chapter 5 Photo Produces Photo-lab-quality Pictures Many have Built-in Card Slot Use Ink-jet Technology 37/48 Non-impact Printers Chapter 5 Laser High-speed, High-quality DPI ranges from 600 to 2,400 dpi 38/48 Non-impact Printers Chapter 5 Thermal Uses Electrically Heated Pins Heat-sensitive Paper Thermal Wax-transfer Dye-sublimation 39/48 Non-impact Printers Chapter 5 Mobile Small Lightweight Battery-powered Print from: Notebook Smart Phone Mobile Device 40/48 Non-impact Printers Chapter 5 Label Uses Adhesive-type Material Most Print Bar Codes Plotter Produces High-quality Drawings 41/48 Printers Chapter 5 Impact Mechanism Strikes Inked Ribbon Ribbon Contacts Paper Ideal for Multipart Forms Can Withstand Dusty Environments Vibrations Extreme Temperatures 42/48 Impact Printers Chapter 5 Dot-matrix Pins on Print Head Strike Inked Ribbon Line Printer High Speed 43/48 Audio Chapter 5 Produces Music, Speech, & Sounds Speakers Subwoofer Headset Earbuds Sound Card 44/48 Audio Chapter 5 Voice Computer Talks to You Through Speakers Internet Telephony AKA VoIP Make Voice Calls Using Internet Comcast 45/48 Other Output Devices Chapter 5 Multifunction AKA All-In-One Provides Functionality of Printer Scanner Copy Machine Fax Machine 46/48 Other Output Devices Chapter 5 Data Projector Projects Computer Image to Larger Screen Force Feedback Sends Resistance to Device In Response to User Actions Interactive Whiteboard Displays Image on Connected Computer 47/48 Other Output Devices Chapter 5 Physical Challenges Magnifier Enlarges Items in Window on Screen Braille Printer Windows Settings Increase Size / Change Color 48/48