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Computer system - Coggle Diagram

- - - - Personal computers
      - Handheld computing devices
      - Smart phones
  - - - Network server
      - Mainframe computers
    - - Process the request of one user at a time
      - Completes the process and returns the results to the user
      - Switches to the next user for a vert shotRt time span
  - - - Payroll printing system
      - School report printing systems
      - Scheduled system backup
    - - Computer resources, fully utilized
      - Idling time of computer systems dealing with data entry by users is minimized
      - Time consuming jobs can be executed in non-peak hours
  - - - Online ticket reservation system
      - Online job searching system
  - - - Automatic teller machine (ATM)
      - Computer-aided manufacturing
      - Video conferencing systems
      - Medical systems for image-guided surgery
      - Aerospace systems
      - Military defense systems
  - - - Run multiple tasks simultaneously
      - Run a single job consisting of many parallel process
      - Run a process with a high degree of pipelining
      - Run a process making use of several ALUs simultaneously
  - - - Computer animation rendering
    - - Resources, more effectively
      - Much better computation performance
      - More fault tolerant
      - More cost effective
      - Scalable
- - - - Desktop computers
        
        Single-user computer system, placed on a desk, widely used in homes, offices and schools
        
        Components
        
        CPU
        
        Power supply
        
        Motherboard
        
        Expansion slot
        
        Expansion cards can increase the capacity and processing power of a computer
        
        Expansion card types
        
        Display card
        
        Sound card
        
        Network interface card
        
        TV tuner card
        
        DVD-ROM drive
        
        Main memory
        
        Hard disk
        
        Ports
        
        Line-in
        
        Microphone
        
        Speaker
        
        Ethernet port
        
        VGA port
        
        Serial port
        
        Parallel port
        
        USB port
        
        Workstation
        
        Engineers, computer graphic designers, financial traders
        
        Characteristics
        
        High resolution monitor
        
        Faster CPU
        
        More memory
        
        Accelerated display card
        
        High storage capacity hard disk
      - Notebook computers
        
        Laptop computers, small and lightweight personal computers
        
        High cost, highly portable, low power comsumption
      - Handheld computers
        
        Applications
        
        Ipad
        
        Smart phone
        
        Tablets
        
        Also called palm or personal digital assistant (PDA)
        
        Pocket-sized device
        
        Input: Handwritten input (pen-like stylus), small keyboard, voice recognition system
      - Network computers
        
        Applications
        
        Point-of-sale terminals
        
        Banking services
  - - - Information systems of government departments
      - Database systems of banks
      - Ticket booking systems of airlines
  - - - Weather forecasting
      - Complex scientific and medical research
      - Military purposes