How To Understand an External Modem

Technology is on a fast roll in our current era. Innovation and discoveries are so new that sometimes you do not have any idea how a certain gadget or device works. One ideal example is an external modem. You have a computer at home and you are aware that you are using this with the help of a modem. However, you might be wondering how it really works.

  • What is a modem? Modem is the simple term for Modulator Demodulator. It translates digital data from your computer into analog data when it is connected to the phone line. As its name suggests, an external modem is found outside the computer and it has a self-contained case, which need not be connected inside the computer. This enables one computer to communicate with other computers at a vast distance or what we plainly call the Internet.

    This requires a separate power supply because it needs a source of energy. When you experience errors in connection, you can just turn off your computer and turn it on again until it works well.

  • Differences between an external and internal modem - These two types of modems actually work in the same manner.  But aside from the fact that they differ in location, they also differ in form. An external modem is a long cord while an internal modem is found on the inside of the computer that is placed in a special card slot or a modem chipset. An installer is required for you to able to use this. The power supply of this modem is taken from its motherboard. The advantage of this modem is that it is usually cheaper.
  • Types of external modems:
    1. Radio Modem. This special type of modem allows you to communicate wirelessly at a wide range of space typically used by Private Radio Networks in giving or sharing audio information on real time.
    2. Voice Modem. This type of modem has the capability to recognize, play, transmit and receive voice recordings over the phone line. This is typically used for answering machine applications and telephony.
  • Digital to analog conversion and vice versa - An external modem, once connected from the computer to the phone line, converts the digital data to analog data which would be received by another computer so as sharing of information is done. The receiver’s external modem then converts the analog data into a digital data for the information to be recognized by his computer. The binary system of numbers is the language used here in data processing with only numbers 1 (one) and 0 (zero) to be utilized.

Understanding how an external modem works is not as difficult as it seems. Knowing the basics is the key to learning.


Share this article!

Follow us!

Find more helpful articles: