Data In, Information Out Slide No. 1 Data In Information Out CS 104 CS 104

Data In, Information Out Slide No. 2 n Understanding Input: Not Just Data Entry n Input Devices: The Computer’s “Senses” n Input Devices in Business & Industry n Biological Feedback Devices n Chemical Detectors n Output Devices: Engaging Our Senses n Printers n Sound Cards & Speakers n Tactile Feedback Input and Output C Module

Data In, Information Out Slide No. 3 Data In, Information Out Unit 2C Objectives n Input Devices n Pointing Devices n Keyed Data Alternatives n Output Devices n Hard Copy versus Soft Copy

Data In, Information Out Slide No. 4 n Keyboards änumeric keyboard äfunction keys ätoggle keys äCaps Lock key ästatus indicators Input Devices: The Computer’s “Senses” C Module Input & Output

Data In, Information Out Slide No. 5 n Cursor & Cursor Movements äinsertion point äcursor movement keys (arrow keys) ärepetitive strain injury (RSI) /cumulative trauma disorder (CTD) Input Devices: The Computer’s “Senses” C Module Input & Output Ergonomic keyboards help prevent CTD

Data In, Information Out Slide No. 6 Keyboards n QWERTY n DVORAK n Foreign Language (Chinese, Japanese) n Membrane-switch (fast food)

Data In, Information Out Slide No. 7 n Mouse operations äClicking äDragging äDouble-Clicking Pointing Devices C Module Input & Output click

Data In, Information Out Slide No. 8 Pointing Devices(mice) n Mouse (1-4 buttons, mechanical, optical) n Trackball (Ball is on the top, less space, used in laptops n Joystick (game playing and controlling robots

Data In, Information Out Slide No. 9 Pointing Devices C Module Input & Output n Touchpad n Touch-Sensitive Screens n Pen-Based Systems

Data In, Information Out Slide No. 10 Pen-Based Systems n Apple Newton (personal digital assistants) n light pen (photoelectric cell to indicate position) n digitizing table (stylus)

Data In, Information Out Slide No. 11 Touch Entry n Touch screens - touch a specific part of the screen to execute a command n Kiosks - Disney World n some laptops are using this instead of the embedded trackball

Data In, Information Out Slide No. 12 Additional Input Devices C Module Input & Output n Soundcards n Microphones & Speech Recognition n Video Capture Cards n Cameras n Scanners Handheld scanner

Data In, Information Out Slide No. 13 Scanning Devices n Optical recognition systems n MICR (magnetic Ink Character Recognition) n Bar code readers - UPC Universal Product Code n Optical mark reader “bubble test” n Optical scanners for scanning in text, graphics (digitize)

Data In, Information Out Slide No. 14 Voice Recognition Devices n Usually require “training” n limited vocabulary

Data In, Information Out Slide No. 15 Video Digitizers n Capture input from any video device (VCR, television, camcorders, etc..,) n audio digitizers - look at programs- >accessories->multimedia

Data In, Information Out Slide No. 16 Input Devices in Business & Industry C Module Input & Output n source data automation n image processing systems n magnetic ink character recognition (MICR) n bar code readers n universal product code n mark sense character recognition n optical mark reader (OMR)

Data In, Information Out Slide No. 17 Additional Input Devices C Module Input & Output n Biological feedback devices n Chemical detectors Virtual reality programs use helmets to enable users to “move” through a simulated “world.”

Data In, Information Out Slide No. 18 Output devices n Monitor n Printer n Plotter n Computer Output Microfilm/ Microfiche WP is an easy to use soft-

Data In, Information Out Slide No. 19 Monitors C Module Input & Output n cathode ray tube (CRT) n liquid crystal display (LCD) Laptop color LCD display Desktop computers use a CRT

Data In, Information Out Slide No. 20 Screen Size C Module Input & Output Quoted Size and Actual Viewable Area Monitor SizeViewable Area 21 inches20 inches 17 inches16 inches 15 inches14 inches monitor size - for home (bigger the better)

Data In, Information Out Slide No. 21 Additional Monitor Characteristics C Module Input & Output n dot pitch n interlaced monitors n noninterlaced monitors n multiscan monitors

Data In, Information Out Slide No. 22 Dot Pitch n dot pitch - the distance between pixels n typical dot pitch.28

Data In, Information Out Slide No. 23 Graphics Adapter Board n board that plugs into an expansion slot to interface with the monitor n also known as the video card n each board unique n some come with video memory (VRAM or DRAM, video and dynamic respectively) n refresh rate - usually 70 times per second - interlaced and non-interlaced

Data In, Information Out Slide No. 24 n Video Adapters ävideo RAM (VRAM) ävideo graphics adapter (VGA) äsuper VGA ärefresh rate äflicker Output Devices: Engaging Our Senses C Module Input & Output

Data In, Information Out Slide No. 25 Video Graphics Adapter C Module Input & Output Common PC resolutions 640 x x x x 1200

Data In, Information Out Slide No. 26 Video Graphics Adapter C Module Input & Output Common color depth Color DepthNumber of colors VGA (4 bits) Color Mode (8 bits)256 High Color (16 bits)65,536 True Color (24 bits)16,777,216

Data In, Information Out Slide No. 27 Audio Output n need a sound card and speakers n some sound cards can read a text file n speech synthesis - simpler than speech recognition ( no variability)

Data In, Information Out Slide No. 28 Printer  impact  non-impact

Data In, Information Out Slide No. 29 Impact Printers n produce a page, a line, or a character at time n line printers - only text- no graphics n dot-matrix

Data In, Information Out Slide No. 30 Nonimpact Printers C Module Input & Output n inkjet n laser n thermal transfer n dye sublimation n snapshot n multifunction

Data In, Information Out Slide No. 31 Additional Output Devices C Module Input & Output n plotters n tactile feedback For the latest news on haptics, see the Haptics Community Web PageHaptics Community Web Page

Data In, Information Out Slide No. 32 Plotter n usually larger and use pens or electrostatic charges to create images n generally more expensive

Data In, Information Out Slide No. 33 Computer Output Microfilm/Microfiche (COM) n stores images on a roll of film n 4x6 sheets n less expensive n faster than normal printing n need a special reader n may soon be replaced by CD-ROM which can store 1 million pages or 680M

Data In, Information Out Slide No. 34 Hard/Soft Copy n printed output n microfilm n microfiche n CD-ROM n monitor display n audio output Dictionary

Data In, Information Out Slide No. 35 Questions?