And all of those choices will eventually bring you to the service that you need. One very important choice you'll want to keep your eye on is the option to return to the main menu. This way, you can return to the beginning of a system and start over in case you get lost among the way. Another important choice that you want to keep your eye on is the choice to get help! File viruses may also be referred to as parasitic viruses, however should a virus work from both the boot-sector and from an infected program, the virus is then known as a multipartite virus. Why viruses exist remains a mystery, however we had privy access to the mind behind a virus programmer who explained his motivation behind his destructive inclinations. From just these basic configuration options, you can create your own experience with a computer each time you sit down in front of one. Customizing your PC is what makes using a computer truly unique and enjoyable, so have fun and build a situation at home or a work in which you'll love to work with everyday. What differentiates them from smartphones is that users can add (download and install) additional programs to smartphones and they seemingly become mini portable computers for the people who use them. That - and the ability to edit the content that sits on them - is what makes these phones "smart. Calls may be free (1-800 or 1-877 number), or they may cost a small fee (1-900). 6. PC support groups or user groups are another option for help. These are groups that meet in libraries, computer stores, or other local areas and they discuss all sorts of issues related with a particular product. Even if you aren't experiencing a computer or software problem, user groups are fun to participate in and they can help you network into other interests such as job or teaching opportunities. The most important component of a computer's hardware system is its fan. The fan is located on the computer's CPU unit and when that thing gets clogged with dirt and dust, it can run down a computer faster than you can say, "Something's wrong with my computer and I don't know what it is!" In short, the fan is responsible for keeping a computer's motor cool and this motor is what keeps the computer's hard drive and peripherals functioning the way you need them to, which translates to "fast.