HOW TO BUILD A MODEM

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Modem


Today, modems and an Internet connection are nearly essential. You have many options for modems and Internet service providers ranging from DSL Internet connections, cable modems and cable access to the Internet, slow 56k dial-up modems, and satellite Internet connections. The modem and other equipment you need will depend upon the type of Internet connection you decide to use. An example of a PCI modem card can be found in Figure 23.

Figure 23: Modem card
This is a PCI modem card. The most common type of expansion cards are PCI cards. They plug into PCI slots in the mainboard. All PCI cards are installed in the same manner. Once you’ve installed one, you’ve installed them all!


Many people today will choose cable modems or DSL modems because of their much faster download speed.
Modems can also be internal or external. Internal modems usually plug into a PCI slot in your mainboard. Some internal modems are called Win Modems, because they rely upon the mainboard’s processing power to help them do their job. Win Modems are less expensive and are affectionately known as lobotomized modems.
Unless you plan to do intensive computing while also online, a Win Modem should be fine if you plan to use a Windows operating system. If you plan to use Linux, you might want to avoid Win Modems, because they’re sometimes more difficult to configure properly with Linux. Non-Win-Modems are called controller-based modems.
I like external modems (all of which are controller-based), because I like to see all the lights (LEDs) showing modem activity. And, if the modem disconnects, a glance at the external modem’s LEDs will show it’s disconnected.
Some operating systems are notorious for showing a dial-up modem as connected even if the connection has been lost. I also like to turn off the modem when it’s not in use. That physically prevents a hacker from gaining access to your computer.
Some internal modems have lights showing similar activity. These lights sit at the back end of the PC where nobody can see them. I don’t know what genius decided that modem lights on an internal modem was a good idea.
Most controller-based modems, whether external or internal, should work with Linux. 
You probably have an older computer from which you can scavenge a quality keyboard and mouse. Otherwise, you can find cheaper ones free after mail-in rebates. However, most experienced PC users suggest purchasing high-quality keyboards and mice, because a quality keyboard and mouse make using your PC much more enjoyable. I like Microsoft keyboards and mice.
Figure 24 shows the complete system with a monitor, keyboard, and mouse.

Figure 24: A full system
Includes the system case plus a keyboard, mouse, and monitor.


By building your own PC, you’ll also learn how to upgrade your PC. You’ll have the skills and confidence to install a larger hard drive, add more RAM, or install a DVD drive.
 

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