It may be a hassle to type it in each time they want to get online, but it's better to know the times that they connect than to have them sneak online without your permission and knowledge of their activities. The second step towards protecting your children online is using the computer together. Siting next to your child while he or she peruses the Internet, you can guide him or her to make safe and intelligent decisions. Some of the most common parts of a menu bar grants access to File commands, Open commands, Save commands, and Print commands. An example of an error in this part of an interface would be if an option was missing or grayed out (lighter in color). Tool bar - this part of a program displays small icons across the top which represent tools. There are other programs that do the same thing and there are even programs that can compress and decompress files for both the Windows and the Mac system. However since Winzip and StuffIt are the most popular, we will assume you will use either one to compress and decompress your own files. If you download a compressed file from a website or file library that ends in an . Another advantage that shareware has over commercial software is its compatibility. We're not saying that shareware is compatible with all operating systems. What we're saying is that since we can try shareware before paying for it, we can determine if the software is completely compatible with our systems first. Deletion programs will analyze a computer's operating system and installed programs to determine which files are crucial to computer function versus which files are safe to delete. You already have such a program on your computer and it's Windows' Add/Remove Programs (available from the Control Panel). An operating system is a software program that controls how the computer's hardware (and installed software) works. It manages the activity of every component and then displays that activity as a user-friendly interface (GUI). It keeps track of where things exist on a computer's hard drive as well. But perhaps most importantly for the end-user, the operating system is responsible for translating commands issued with a keyboard and mouse into binary code (010110101 stuff) that can communicate with a set of speakers, a printer, a scanner, and more.