Computer

Cards (93)

  • Computer applications
    The use of computers to perform specific tasks
  • Computer applications
    • Includes the basics of computer hardware, software, and networking
    • Helps students to develop basic skills in using Windows and Microsoft Office, and creating web pages
  • System
    A way of working, organizing, or doing something which follows a fixed plan or set of rules
  • System
    • the university system
    • the bank system
  • Subsystem
    A unit or device that is part of a larger system
  • Subsystem
    • A department in a university
  • Computer
    An electronic machine that processes data as input to give information as output
  • Computer system
    A computer along with additional hardware and software together
  • Usage of computer
    • Storing Important Data
    • Use Computer for E-Learning
    • Computer in Education System
    • Uses of a computer in office work
    • Use computer for defense purpose
    • Use Computer for Training purposes
    • Use Computer in Science and Technology
    • Use the computer to communicate with people
  • Background of computer
    • Mechanical; prior to 1945
    • Electronic; after 1945
  • Mechanical computers
    • Abacus; Dates back to 500 BC
    • Mechanical adder/subtractor by Blaise Pascal in France (1642)
    • Difference Engine by Charles Babbage for polynomial evaluation in England (1827)
    • Binary mechanical computer by Konard Zuse in Germany (1941)
    • Electromechanical decimal computer by Howard Aiken (1944) - Harvard Mark 1 by IBM
  • Generations of electronic computers
    • First Generation (1945-54)
    • Second Generation (1955-64)
    • Third Generation (1965-74)
    • Fourth Generation (1975-90)
    • Fifth Generation (1991-present)
  • Advantages of computer
    • Speed
    • Reliability
    • Consistency
    • Storage
    • Communications
  • Disadvantages of computer
    • Violation of Privacy
    • Public Safety
    • Impact on the labor force
    • Impact on Environment
  • Digital computer
    Devices that are capable of solving problems by processing information in discrete form, operating on data expressed in binary code
  • Applications of digital computers
    • Desktops
    • Laptops
    • Server
    • Embedded Computers
  • Analog computer
    A computer that uses a continuous signal to process
  • Analog computers
    • Television
    • Mechanical calculator
  • Applications of analog computers
    • Speedometer
    • Refrigerator
  • Classification of Computer

    • Micro computers
    • Mainframe computers
    • Mini Computers
    • Super Computers
  • Microcomputer
    A complete computer on a small scale, designed for use by one person at a time
  • Microcomputer
    • Data and word processing
    • Electronic spreadsheets
    • Professional presentation
    • Graphics programs
    • Communications and database management systems
  • Mainframe computer
    High-performance computers with large amounts of memory and data processors that process billions of simple calculations and transactions in real time
  • Mainframe computer examples
    • zSeries mainframe computer of International Business Machines series (IBM)
    • Universal Automatic Computer from UNIVAC series
    • A system named NonStop by the manufacturers of Hewlett Packard
  • Mainframe computer
    • Bulk data processing for tasks such as censuses
    • Industry and consumer statistics
    • Enterprise resource planning
    • Large-scale transaction processing
  • Minicomputer
    Smaller, less expensive, and less powerful than a mainframe but more expensive and more powerful than a personal computer
  • Minicomputer examples
    • IBM midrange computers
    • Control Data's CDC 160A and CDC 1700
    • DEC PDP and VAX series
  • Minicomputer
    • Scientific and engineering computations
    • Business transaction processing
    • File handling
    • Database management
  • Supercomputer
    The fastest, most powerful and most expensive computer
  • Supercomputer examples

    • Summit, United States
    • Sierra, United States
    • Sunway TaihuLight, China
  • Supercomputer
    • Quantum mechanics
    • Weather forecasting
    • Oil and gas exploration
    • Molecular modeling
  • Parts of the Computer System
    • Hardware
    • Software
    • Storage Unit
    • Communication Channels
  • Software
    A series of instructions that tells the computer what to do and how to do it
  • Software examples
    • MS Word
    • MS Excel
  • Hardware
    The physical elements of a computer
  • Hardware examples
    • Keyboard
    • Mouse
    • Monitor
  • Storage unit
    Part of the computer system employed to store the information and instructions to be processed
  • Storage unit examples
    • Memory Cards
    • DVD
    • Hard Drive
  • Communication channel
    The medium used to transport information from one network device to another
  • Data
    A collection of unprocessed items, which can include text, numbers, images, audio, and video