1. Introduction to computers

2. Computer
A machine that can execute a programmed list of instructions

3. hardware
Objects on the computer that you can actually touch: disk drives, display screens, keyboards, printers, mouse

4. software
Computer instructions that are stored electronically

5. input
Information put into a computer

6. output
Information that comes out of a computer

7. Program
An organized list of instructions that, when executed, causes the computer to behave in a predetermined manner ***Without programs, computers are useless

8. application
A program (or group of programs) designed for use by the end user Also referred to as APP

9. programmer
A person who writes computer programs

10. compiler
A program that processes statements written in a programming language and turns them into machine language or "code" that a computer can use

11. bug
An error in a computer program that causes it to produce an unexpected result

12. debug
Identify and remove errors from computer software

13. binary
A number system that has 2 rather than 10 as a base

14. bit
A basic unit of information in computing

15. Byte
A unit of data that is eight binary digits (bits) long

16. data
A collection of information

17. database
A structured set of data

18. file
A collection of data or information that has a name

19. storage
A place where data is held in a computer

20. Hard drive
A data storage device on a computer

21. Operating system
The most important program that runs on a computer It manages all of the other programs that run on the computer

22. cpu
Central Processing Unit The ‘brains’ of the computer where most of the calculations take place

23. memory
The process by which data is encoded, stored, and retrieved on a computer

24. printer
Any device that prints text or pictures on paper

25. monitor
A display screen used to provide visual output from a computer

26. mouse
A device that controls the movement of the cursor or pointer on a display screen

27. Compact disk (CD)
A small plastic disc on which music or other digital information is stored, and from which the information can be read using reflected laser light

28. Digital Versatile Disk (DVD)
Similar to a CD but it can hold more information

29. network
A group of two or more computer systems linked together.

30. internet
A global network connecting millions of computers

31. Modem
A device that enables a computer to transmit data over telephone lines A modem converts the data between digital and analog ***Short for modulator-demodulator

32. router
Device that forwards data packets along networks Routers are located at gateways, the places where two or more networks connect

33. bandwidth
Amount of data that can be sent over your Internet connection per second This is an indication of how fast your connection is

34. protocol
The official set of rules governing how computers communicate with each other

35. IP address
Internet Protocol Address A series of numbers that tells us where a particular device is on the Internet network

36. Hyperlink/hypertext
A word, phrase, or image that you can click on to jump to a new document or a new section within the current document

37. World wide web (WWW)
A worldwide collection of electronic documents connected by hyperlinks

38. browser
Software application used to locate, retrieve and display content on the World Wide Web

39. website
A connected group of pages on the World Wide Web regarded as a single entity, usually maintained by one person or organization

40. Home page
The introductory page of a website, typically serving as a table of contents for the site

41. icon
A small picture or symbol on a computer screen that you point to and click on and it performs a function

42. Uniform resource locator (URL)
Storing and accessing data and programs over the internet instead of the computer hard drive

43. Search engine
Software that searches the Internet for documents that contain a key word, phrase, or subject

44. Cloud computing
Storing and accessing data and programs over the internet instead of the computer hard drive

45. spyware
Software that enables a user to obtain information about another's computer activities by obtaining and transmitting data secretly from their hard drive

46. Digital footprint
A trail of data you create while using the Internet. In includes the websites you visit, s you send, and information you submit to online services