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NSS S1 Theory Map - Coggle Diagram

- - - - Stores programs, files such as documents, music files
      - Secondary Storage
        
        Internal or External Harddisk
        
        Non-volatile
        Data will be available even if the computer is switched off
        
        Eg Hard disk drive, Solid State disk drive, Thumb drive, Flash Card, SIM card
    - - Primary Memory
    - - Brain of the computer
      - Carries out instructions
    - - Holds together many components
    - - Enter data into computers
      - Eg, Mouse, Scanner, Keyboard
    - - Deliver information to users
      - Eg Monitor, Printer, Plotter, Projector
  - - - Importance of Correct Input
      - Input containing Errors
        will produce unusable data
  - - - Provides the user interface, manages the computer’s resources and hardware
      - eg Windows, iOS, Android
      - Graphical user interface (GUI) that allows users to interact with the computer.
        
        Pointer to select objects
        
        Icon
        
        Menus to access program or folders
        
        Windows
    - - Application software is software allows users to perform tasks.
      - Example
        
        Document Processing
        Word: Writing a document
        
        Drawing Software
        Inkscape: Creating a digital drawing
        
        Presentation Software
        Powerpoint: Preparing a presentation
        
        Spreadsheet
        Excel: Performing calculations on data
        
        Programming Software
        Scratch: To create simple programs
  - - - Computers and their components can be damaged
        
        Do not place heavy items on top of the laptop
      - Using outdated antivirus
        
        Update antivirus regularly
    - - Avoid eating or drinking near computer
    - - Do not block computer vents or place computers in hot places.
    - - Careful when you are working with files.
    - - backup regularly
      - Do not leave computer unattended in public areas
    - - Check cable connections
      - check power switch is on
      - End task or terminate program if does not respond
      - Restarting computer
  - - - may send hateful messages, spread lies, or make nasty comments about others online.
      - Prevention: You can report bullies to an adult such as a parent or teacher.
    - - Prevention: Do not give away personal information or arrange to meet someone whom you have met online.
    - - Spyware collects personal information about a user without the user’s knowledge
      - Prevention: Install anti virus software and avoid installing programs from suspicious websites or opening e-mail attachments or links from unknown senders.
    - - Prevention: Install anti virus software and avoid installing programs from suspicious websites or opening e-mail attachments or links from unknown senders.
    - - close the browser window immediately.
    - - person who uses those skills to gain unauthorised access into computer systems or online accounts for malicious purposes.
      - Prevention:Use strong passwords contain at least 6 characters that are combination of letters
- - - - Bold
      - Underline
      - italic
    - - Serif
        Got tail
      - Sans-serif
        no tail
  - - - Notes
      - Letters
      - Reports
  - - - Right
      - Centre
      - Left
      - Justified
    - - Portrait
      - Landscape
- - - - allows us to draw objects such as shapes, paths and text
      - • Move
      - • Rotate
      - • Resize
      - • Skew
      - • Flip
      - • group or ungroup
      - • Duplicate or copy and paste
      - • Export into raster graphics
    - - • none
      - • solid
      - • linear
      - • radial and pattern
    - - Union
        Merge 2 or more objects
      - Difference
        Remove part of object
      - Interpolate transforms one shape into another shape according to a specified number of steps
- - - - makes it easier to copy formulas from one location to another
      - display the updated results when changes