A computer is a machine that can perform calculations using a set of instructions. Computers have input devices like keyboards and mice to enter information, and output devices like monitors, printers, and projectors to present information. Data storage devices like CDs, DVDs, and USB drives are used to transfer files between computers. The most important software is the operating system, which controls how hardware and other programs share resources. Common software includes word processors, spreadsheets, web browsers, and email programs, while specialized software exists for tasks like finance, drafting, and tutorials.

1. Computer Operations Computer Literacy Ms Irving

2. What is a computer? A Computer is any machine that can use a set of instructions to perform calculations. Most computers have software that allows them to do varied and complicated tasks.

3. Input Device An Input Device is used to enter information into a computer.

4. The following are examples of input devices:

5. Input Devices Keyboard – A tool used to enter letters into the computer. The keys on a keyboard represent different letters, numbers, and computer functions. Mouse - A tool used to move a cursor on a computer screen, scroll up and down a screen, and select objects displayed on a screen. Scanner – A device that scans an image in order to reproduce it. Scanners reproduce images by converting them into digital files.

6. Output Device An Output Device is used to present information generated by a computer.

7. The following are examples of output devices:

8. Output Devices Monitor – A device with a screen used to show video and graphic information that is generated by a computer. Printer – A device used to make a paper copy of what is created on the computer. Digital Projector – A device used to project digital images from the computer and puts them onto a large screen, such as a movie screen.

9. Data Storage Devices Data Storage Devices are used to transfer files from one computer to another.

10. The following are examples of output devices:

11. Data Storage Devices CDs DVDs USB flash drives Data can also be stored on a personal computer. The data is stored on the computer’s Hard Disk Drive . A computer’s hard disk drive is its permanent internal memory.

12. Software/Computer Programs Software is the language or code that is used to make the computer carry out all the different commands.

13. Operating System The most important software on a computer is the operating system . An operating system is a type of software that controls how hardware and other pieces of software share a computer's resources. Examples : Microsoft Windows Mac OS Linux

14. Software Computers may have many other types of software on it. Common software includes: Word processing programs like MS Word or WordPerfect Spreadsheets such as MS Excel or Quattro Pro Presentation software such as MS PowerPoint Web browsers like Firefox and Internet Explorer Email programs such as MS Outlook and Thunderbird

15. Many types of software perform specialized tasks. Some examples of this include:

16. Financial Software Financial Software can be used to track expenses, make a budget, manage online bank accounts, pay bills, and more. An example of financial software is Quicken.

17. Drafting Software Drafting Software can be used to design three-dimensional objects, such as buildings and gardens. An example of drafting software is AutoCAD.

18. Tutorial Software Tutorial Software can be used by people to learn about a certain subject. For example, a history tutorial program may teach about a certain time period. Then, it will give the user a chance to take a quiz to see how much the user has learned.

19. Computer Operations The End