GRE Subject Tests

Computer Science explores the principles and applications of computing, programming, and information technology.

What is Computing?Programming BasicsInformation Technology in Daily Life
Algorithms and Problem-SolvingData StructuresCybersecurity and Privacy
Building Your First ProgramCollaborative Projects and TeamworkSolving Real-World Problems With Code
Breaking Problems Into StepsPracticing With Mini-Projects
What is Computing?Programming BasicsInformation Technolo...Algorithms and Probl...Data StructuresCybersecurity and Pr...Building Your First ...Collaborative Projec...Solving Real-World P...Breaking Problems In...Practicing With Mini...
Basic Concepts

Information Technology in Daily Life

How IT Shapes Our World

Information Technology (IT) is about using computers and software to store, retrieve, and send information. IT is everywhere, from schools and hospitals to online shopping and social media.

IT Systems

  • Hardware: The physical parts of a computer, like the keyboard and monitor.
  • Software: The programs and apps that tell hardware what to do.
  • Networks: Systems that connect computers together to share information.

Examples in Daily Life

  • Video calls with friends across the world.
  • Using online maps to find the quickest route home.

Making Life Easier

IT helps us communicate, learn new things, and stay organized.

Examples

  • Doctors using tablets to access patient records.

  • Students researching school projects online.

In a Nutshell

Information Technology helps us store, share, and use information in our everyday lives.

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Algorithms and Problem-Solving