TLE

• Computers can be found in many places such as libraries, shopping malls, offices, stores, schools, factories, banks, homes, diagnostic laboratories, and even in outer space
• Many scientific and technological advances marked the beginning of the 20th century, including the inventions of the airplane, television, radio, mobile devices, and most especially the computer
• Computers have been at the forefront in the development of innovations through its many functions in this digital world
• Having the knowledge and skills in computer system servicing (CSS) is the start and the most fundamental
• Search engine


  A program that enables the users to search for documents or information on the world wide web
• Web browser


  An application used to access websites and online content
• How to search for information on the internet

  1. Click a browser

  2. Type the search engine in the web browser's address bar and press enter

  3. Use the search tab or address bar of the search engine to find information
• Computer


  An electronic machine that processes and stores information
• Components of a computer system

  • Input devices (keyboard, mouse)
  • Processing devices (memory, processor)
  • Storage devices (hard disks)
  • Output devices (monitor, speakers)
• Types of computers


  • Supercomputer
  • Mainframe computer
  • Mini computer
  • Microcomputer
• Supercomputers are used in research and exploration, weather forecasting, and nuclear weapon testing
• Mainframe computers manage access to centralized resources for service in a network, used by banks, schools, and insurance companies
• Mini computers are multi-user systems where users can work on different computers simultaneously, found in school computer labs
• Microcomputers are the cheapest kind of computer, designed for general use such as entertainment, education, and work purposes
• Elements of a computer system

  • Hardware
  • Software
  • Peopleware
• Hardware components


  • Input devices
  • Output devices
  • Process devices
  • Storage devices
• Motherboard


  The main circuit board of the computer that all hardware components are connected to
• CPU (Central Processing Unit)


  The brain and heart of the computer system that performs all instructions and calculations
• Storage devices


  • Hard disk drives
  • Flash drives
  • Memory cards
• Operating system (OS)


  The software that controls the operations of computer hardware and provides an environment for other software to work in
• Examples of operating systems


  • Windows
  • Apple Macintosh
• Application software


  Computer programs that perform specific tasks
• Peopleware


  The people who use the computer system, as the most important element