Csc 1

• Computer

  An electronic device, operating under the control of instructions stored in its own memory
• Computer

  • Collects data (Input)
  • Processing data
  • Produces Information (output)
• Types of computers

  • Supercomputers
  • Notebook computers
  • Mainframes (Minicomputers)
• Hardware


  The physical parts of a computer
• Software

  A set of instructions that tells the computer what to do. It directs and controls the hardware.
• Software types

  • System software
  • Application software
• System software

  A type of computer program that is designed to run a computer's hardware and application programs
• System software

  • Drivers
  • Operating Systems: Windows, Linux, MAC, Android
  • Some Antivirus programs
• Application software


  Computer programs designed to carry out a specific task. The computer user interacts with the system using an Application Software and provides the input data.
• Application software


  • Word
  • Excel
  • Browser
• A computer program that functions as an intermediary between a computer user and the computer hardware is called an operating system
• Microsoft Word, Microsoft Excel, and Google Docs are examples of application software
• Linux is not an example of application software
• Computer system

  • Input Unit - Input Device
  • Central Processing Unit - CPU
  • Memory Unit
  • Output Unit - Output Device
• Input devices

  • Keyboard
  • Mouse
  • Scanner
  • Camera
• Output devices


  • Display monitor
  • Speakers
  • Printers
• Memory units


  Used to store data and programs instructions
• Memory units


  • RAM
  • ROM
  • Hard Disk
• Central Processing Unit (CPU) or Processor


  The brain of the computer system. It provides the processing power to the computer and executes computer programs.
• CPU


  • Intel
  • AMD
• Computer speakers or headphones are output devices
• Devices that allow users to feed data into a computer for analysis and storage and to give commands to the computer are called input devices
• Input devices convert human-understandable data and programs into a form that computers can understand and process
• Input devices

  • Mouse
  • Keyboard
  • Scanner
  • Light pen
  • Microphone
• The third step is defining variables, which are used to store data values during program execution.
• The second step is breaking down the problem into smaller subproblems or tasks.
• Variables have names assigned by the user and contain specific types of data such as numbers, characters, or text strings.