1ab input and output
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TRANSCRIPT
CIS 105
Input and Output: The User Connection
Describe the user relationship with computer input and output
Explain how data is input into a computer system and differentiate among various input equipment
Describe how a monitor works and the characteristics that determine quality
List and describe the different methods of computer output Differentiate among different kinds of printers Explain the function of a computer terminal and describe
the types of terminals Describe the ethical considerations involved in handling
computer data
Objectives
What is Input? Software (Programs) Data User Responses Commands
•Keyboard•Mouse•Trackball•Touchpad•Joystick•Pens•Pointing Stick•Touch Screen•Graphics Tablet
•Scanners•Optical Readers•OCR/OMR/Bar Code/ Magnetic Ink Character Reader•Data Collection Devices•Biological Feedback
ADA:•Keyguard•Head mounted pointer
•Digital Cameras•Microphone•Voice/Speech Recognition•Video Input•Videoconferencing
Input Devices
Computer Keyboard Using a Computer Keyboard
Cursor-Movement Keys Numeric Keypad Toggle Keys Function Keys Modifier Keys Windows Keys
Alternative Keyboards Entering International Characters
Face Recognition Technology
How do scanners “read”? Keyboard types?
What are 4 types of Input?
Light Sensors
Data; program; commands;
user responses
QWERTY; Dvorak;Enhanced;
Wireless
What is Output?
Text Characters
Graphics Digital
representation of nontext
• drawings• charts• photos
Image Editing Software
Audio Music, speech, sound
Video Images at speed
provide appearance of full motion
Output Devices
•Monitors•Flat Panel• LCD Displays•Gas Plasma•HDTV (digital)
•Pixels•Resolution•Dot Pitch•Refresh Rate•Hertz
•Printers• Portrait/Landscape•Impact•Inkjet•Laser•Thermal printer•Portable printer•Braille printer•Plotters•Label printer•Fax machine•Multifunction
•HDTV•Speakers•Headsets•Tactile Displays
•Data Projectors• LCD• Digital Light (DLP)
Video Card Display
Resolution
Choosing a Computer: Where Do You Start? Anticipate your
software needs first Check the system
requirements
Hardware CPU Monitor (screen
size, readability) Input Devices Secondary storage
space Portability Surge Protectors
What is my budget? What are my needs? Can I expand the capabilities? Whom do I call if I have a problem
putting the machine together? Does the store offer classes on
hardware/software? What kind of warranty/
maintenance agreement comes with it? What’s available?
Who does the maintenance?
More Info? PC Purchase Worksheet
Choosing a Printer…
What is animation?
What are 4 types of Output?
Text; Graphics; Audio; Video
Series of still images displayed in rapid
sequence
Ethics and Data Once data is in computer, there
are many ways it can be used Ethical issues to ponder
Is it ethical to use a computer to alter photographs?
Is it ethical to erase e-mail messages that may be of interest to a party in a lawsuit?
Is it ethical to use someone else’s data for your purposes?
Terms to Know: Input/Output
Biological feedback devices CAD/CAM/CIM Cursor Data projector Dot pitch Input Input devices Keyboard shortcuts LCD
MIDI Non-interlaced monitors OCR Output Output devices QWERTY Pixel POS Speech recognition
Touchpad Trackball UPC Voice input Video Graphics Virtual reality
Questions?
?
? ??
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If asked, can you explain…
Explain how data is input into a computer system and differentiate among various input equipment
Describe how a monitor works and the characteristics that determine quality
List and describe the different methods of computer output
Differentiate among different kinds of printers
Explain the function of a computer terminal and describe the types of terminals
Describe the ethical considerations involved in handling computer data
Sources Capron; Computers: Tools for An
Information Age, 8th Ed. 2003 Pfaffenberger; Computers in Your
Future 2003 Microsoft Clipart