A security system that helps protect a computer from threats.

• Router

• 
  Proxy Server

• Firewall

• Search Engine

The physical parts of a computer you can touch.

• Software

• Hardware

• Data

• Virus

A collection of data, like a document, picture, or video.

• Computer

• Table

• Database

• File

The moving arrow or symbol that shows where you're working on the screen.

• Loop

• Cursor

• Index

• Mouse

A worldwide network that connects millions of computers.

• Internet

• Extranet

• Lan

• Server

To send files from your computer to the internet.

• Downlink

• Browser

• Upload

• Monitor

Information stored or used by a computer.

• File

• Hardware

• Data

• Software

A tool for finding information online (like Google).

• Computer

• Search Engine

• Firewall

• Browser

A small device used to move the cursor and click on things on the screen.

• Trackball

• Printer

• Mouse

• Software

To copy files from the internet to your computer.

• Link

• Monitor

• Email

• Download