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INTRO. OF COMPUTER, COMPUTER -electronic devices that process, received…

- - - - GPS units
      - ZigBee Technology
      - wireless router
      - Bluetooth Adapter
    - - Ask for server
        
        request is decode by another computer
        
        sent back response
        
        client intreprets the response
    - - internet is used to acess Resources and services
      - all information can be access on cloud instead of locally
      - Microsoft One Drive, Outlook 365, Google Drive, Google Gmail
  - - - operating system & softwares
      - application
      - data being processed & its results
    - - writing
        
        save data, instructions / info
        
        memory > storage medium
        
        reading
        
        recall data
        
        storage medium > memory
    - - memory cells
        
        each bytes resides in memory has their own specific address= unique number .
    - - RAM
        
        tempory and volatile
      - ROM
        
        permanently and not volatile
    - - Semi-permanent data storage
  - - - CONTROL UNIT - direct and coordinate computer's operation
      - ARITHMETHIC & LOGIC UNIT - perform arithmetic & logical operations
- - - - designated programs to assist users with personal tasks
      - make users more productive
      - types of Appss
        
        Desktop app
        
        Web app
        
        Mobile App
    - - Assembly Languange
        
        Mnemonic Codes
        
        responds to machines language instructions
      - High-level language
        
        machine-independent programming language
        
        combination of algebraic expressions & English symbol
        
        examples :
        
        FORTRAN
        
        COBOL
        
        LISP
        
        C,Python
        
        Java
        
        Prolog
      - Machine Languange
        
        binary number codes (0 ,1)
        
        understood by specific CPU
    - - Utility programs/tools
      - Operating System (OS)
        
        controls interaction between
        
        user
        
        computer
        
        manage allocation of comp.
        
        common OS
        
        Apple's MAC OS
        
        Apple's iOS
        
        Microsoft Windows
        
        Google's Android
  - - - Development phase
        
        Testing phase
        
        Implementation phase
        
        Maintenance phase
- - - - use of datebase
        
        university admission process
      - Database management system (DBMS)
        
        add, modify and delete data
        
        sort & retrieve data
        
        create form and reports from the data in the database
        
        create computerized database
        
        examples :
        
        SQL
        
        IBM Db2 Family
        
        Microsoft Acess
        
        Oracle SQL Developer
        
        MariaDB
    - - 8 Vs for Big Data Development
        
        velocity
        
        variety
        
        volume
        
        viability
        
        value
        
        veracity
        
        validity
        
        volatility
  - - - Rootkit
        
        hidden program on a computer
        
        allows someone control the computer devices from remote location
      - Spyware
        
        placed program in computer/mobile devices without user's knowledge.
        
        secretly collects info
        
        communicate the info to outside source
      - Trojan horse
        
        hidden program that looks legitimate program
        
        does not replicate itself to other computer/devices.
      - Adware
        
        program display advetisement in a banner, pop-up window/ pop-window
      - worm
        
        copies itself repeatedly
        
        e.g. shutting down the computer/devices/network
      - virus
        
        potentially damaging program infects a computer
        
        alter the way the computer/ mobile devices works without user's knowledge/permission
    - - hardware theft
      - software theft
      - information theft
      - unauthorized access and use
      - system failure
      - internet digital network attacks
    - - botnet
      - Benial of service attack
      - Spoofing
  - - - website that encourgaes members to share their interests, ideas, stories, photo,music & videos with other registered.
      - enable users to communicate through
        
        voice
        
        VC
        
        text
        
        online games