Flashcards
Chapter 2
Cards in this deck (27)
- 1Specialist Software for Physically & Visually Disabled Users- Screen Magnifier
- Sticky keys
- Text-to-speech system
- Screen reader
- Speech-to-text system
- Predictive text
- Auditory feedback system - 2Hardware for Motor Impaired Users- Tongue-activated joystick
- Puff-suck switch
- Mouth-stick
- Foot mouse
- Eye typer - 3Hardware for Visually Impaired Users- Braille keyboard
- Braille printer
- Loudspeaker
- Microphone - 4Styles of User Interface- Menus
- Natural Language
- Command-based
- Forms - 5Menus- Related options that can be selected, structured into categories by top word
- Part of WIMP interface
- Use GUI's or text based
- Pop-up or pull down - 6Forms-Limited area of screen with boxes for user to fill in & guide user through what info required
- Dialogue interface: asks questions & requires response before continuing
- Drop down boxes, open text boxes or option boxes - 7Command-based Interface- User types command at command prompt to control computer
- Need good knowledge of commands & effects
- Useful for command that can't be accessed from menus/forms - 8Natural Language- Allow user to use own language to communicate with computer rather than "computer speak"
- Spoken interface: use voice-recognition software
- Typed interface: e.g. Ask.com, Microsoft help
- Software recognises handwriting: Tablet PCs & Portable Digital Assistants (PDAs) - 9Types of Software-Application software
- Operating system
- Utility software
- User interface - 10Application SoftwareAllow computer to be used to solve particular problems/perform particular tasks for user
E.g. Word processors, Spreadsheets, databases, communications (e-mail) - 11Operating system-Performs basic data management tasks
- Depended on by core programs & controls allocation of hardware resources (e.g. memory, CPU time)
E.g. Linux, Microsoft Windows - 12User InterfaceGUI - Based on graphics rather than text
WIMP - type of GUI, all WIMPs = GUIs, not all GUIs = WIMPS
Types: Natural language, form, command line, menu - 13Utility SoftwareSmall program that assists in monitoring & maintaining computer system
E.g. Printer monitoring software, file compression software, virus checkers - 14Storage Devices- Hard disk
- Tape drive
- Memory (USB) sticks
- Optical Disks - 15Hard DisksRemovable/external = large amount of data easily transferred between machines
Internal = main storage device for computer, fixed in - 16Tape Drive- High storage capacity
- Used to back-up large amounts of data
- Tape cassette to store data - 17USB Stick-Large storage capacity (vary size)
- Replaced floppy disk
- Easy to transport (small) - 18Optical DisksCD-ROM (Compact Disc Read Only Memory):
CD-R = recordable - WORM: Write Once, Read Many
CD-RW = Rewritable, can be written to, erased & rewritten to many times
Storage capacity approx 700MB
DVD (Digital Versatile Disc):
- Storage capacity of 4.7GB +
- DVD-R = Recordable
- DVD-RW - Rewritable - 19Types of Applications Software- Word Processor
- Desktop Publishing (DTP)
- Web Authoring
- Spreadsheet
- Presentation
- Database - 20Word Processor-User enter data using keyboard (or microphone)
- Data appear on screen as if on piece of paper, formatted to meet user needs, edited, saved & printed
- Few graphics, mainly text
- WYSIWYG
- Uses: Memos, reports, letters - 21Desktop Publishing (DTP)-Combine images & text, has clipboard (components stay in same place on page until moved by user)
- Uses: Business cards, brochures, posters, flyers - 22Web Authoring-Visual representation of code (HTML - HyperText Mark-up Language), doesn't require user to write any code
- Interface similar to application package
- ADVANTAGES:WYSIWYG, code edited WYSIWYG or directly, built in wizards
- DISADVANTAGES: Degree of technical knowledge & ability needed, usually more expensive than standard application packages - 23Presentation- Produce presentation to be shown by computer & projecter, printed acetate & OHP
- Made for target audience
- Run with/without intervention from user - 24Spreadsheet- Produce mathematical & financial models, graphs to diagrammatically represent data
- Calculations & process numerical data
- Uses: "What If..." calculations, data pattern analysis, goal seeking, forecasting - 25Database- Data split into tables & relationships between tables so join together
- Linked with word processor for mail merge
- Enable user to handle data (e.g. sorting & searching) - 26Input devices- Keyboard
- Mouse
- Scanner
- Graphics tablet
- Digitiser - 27Output Devices- Plotter
- Printer: Dot matrix, inkjet, laser
- Monitor
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- ICT (Chapter 2) Flashcards on Chapter 2, created by rolfs003 on 16/04/2013.
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