Current and emerging technologies

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  • Current and emerging technologies
    • Computer systems
      • Information systems
        • Input: data entered into a system e.g. barcodes
        • Processing: turning the input into a useful form
        • Output: the action that occurs after an input has been processed
        • Stored: information is kept for later use
      • Hardware
        • Physical objects that make up a computer system
        • Microprocessor- contains the CPU. The CPU carries out all of the calculations
      • Software
        • Part of the computer system you cannot see or touch. Set of instructions.
        • Operating systems software
        • Applications software
      • Components of a personal computer
        • Motherboard and CPU
        • Processing methods
        • ROM and RAM
        • input and output devices
        • Secondary / backing storage
    • The operating system
      • User interface: the way the user interacts with the computer - input and output devices as well as display
      • GUI: graphical user interface with windows, icons, menus and pointers.
        • Hyperlinks
        • Alter display options
      • Menu user interface
      • File and folder organisation
      • Encoding data
    • Using computer systems
      • Identifying ICT problems and solving errors
        • Freeze: Ctrl, Alt, Delete
        • Error messages: check by technician, reinstall that piece of software
        • Storage space: delete unnecessary files, archive files, USB
        • Printers: paper jams
    • Input and output devices
      • Input
        • Keyboards
        • Mouse
        • Microphones
        • Digital (video) cameras
        • Touch screen
        • Magnetic strips
        • Sensors
        • Bar-code reader
        • Optical mark recognition
        • Optical character recognition
      • Ouput
        • Monitor
        • Printers
        • Speakers
        • Projector
        • Plotters
        • Control devices
    • Storage devices and media
      • Units of memory
        • 1MB is just over 1,000KB
        • 1GB is just over 1,000MB
        • 1TB is just over 1,000GB
      • Storage devices
        • Hard drives: large, robust, fast, reliable
        • Optical drives: CDs, DVDs, laser beams read and record data
        • Flash memory: small, portable, USBs
        • Magnetic cartridges: DAT tapes, back up servers, backup purposes
      • Specialist storage media
        • Virtual memory
        • Online storage
        • Storing and sharing  photographs
    • Communication networks and entertainment
      • LAN
      • WAN
      • Telephones
      • Email & fax
      • Bluetooth and wifi
      • Servers
      • tv

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danielostin

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