Computer science

• Computer System


  A collection of related computer components (hardware & software) that have been designed to work together smoothly
• Computer


  • An electronic device, operating under the control of instructions stored in its own memory, that can accept data, process the data to produce information & store the information for future use
• Information Processing Cycle


  1. Input

  2. Process

  3. Output

  4. Storage
• Data


  Any data and instructions entered into the memory of the device
• Information


  Information processed into a useful form such as text, graphics, audio, video, or any combination of these
• Computers process data into information
• The software that runs a computer, including operating system is called System Software
• Application Software


  Also called application program, software designed to handle specific tasks for users
• The difference between data and information is that computers process data into information
• Input


  Any data and instructions entered into the memory of the device
• Process


  Interprets and executes instructions to process the data into information
• Output


  Information processed into a useful form such as text, graphics, audio, video, or any combination of these
• Storage


  Long term, permanent access of data and information / Saving data, programs or output for future use
• Instructions


  The step that tell the computer how to perform a particular task