A series of letters, numbers and characters that you enter to get into your computer, internet connection, email or websites that you are registered with. Normally passwords will be masked by asterisks (*) or big dots for security purposes.
Never give out your password for any personal or bank accounts to any one.
This is the brain or the hard working part of the computer. It is doing all the tasks that you have asked the computer to do. It sorts things out, moves information, does the calculations, presents information to the screen or printer and so on.