1. This part of the keyboard is used to type in numbers and perform simple mathematical problems.

2. This is the largest part of the keyboard and can let you type both letters and numbers.

3. These are keys that have specific functions. Caps Lock, Enter, and Backspace are examples of this.

4. This key is used to erase the character to the left of the cursor one at a time.

5. This key is used to cancel or stop a command that a computer is currently doing.

6. It is used to place a space between characters or words when you are typing.

7. This key lets you capture on image of the whole screen.

8. Pressing and holding this key allows you to enter the symbols at the top of some keys.

9. This key is pressed to type in capital letters, pressing it again will let you type small letters.

10. This key is used to go to the next line.

11. It is used to see a list of commands for a certain task or program.

12. It is used to move the page up or down within a document.

13. It is used to move the page up or down within a document.

14. It is used to select any object on the screen.

15. This is where you place your palm while holding the mouse.

16. This action means placing the mouse pointer over an icon, as if you are pointing to it with your finger.

17. To do this mouse action, point to an icon on the screen. Press and hold down the left button.

18. Point to an icon on the screen, then press the left button once. By clicking the icon, you select it.

19. Point to an icon on the screen then press the left button twice in a quick manner.

20. Choose an icon on the screen and point to it using your mouse, then press the right button once.

21. Casing

22. motherboard

23. ports

24. memory

25. power button