What is a fax machine?

Fax is a telecommunication technology,which consists in the transmission of images using electrical signals. The first fax system was demonstrated in 1902, but the devices of this type are still popular. In this article I'll tell you more about what a fax is and how it works.

How it works?

Fax scans the page in narrow strips, widthwhich is about a thousandth of an inch. After this, the bands are divided into small sections, which are called the elements of the raster. Special mechanical fax lenses with light sensors react to shades of black and white colors: black color is transmitted as binary zero, white - as a unit.

The modulator that is part of the fax convertsa digital code into electrical waves that are sent like a voice is transmitted over the phone. On the receiving side, all procedures are repeated in reverse order.

Who needs a fax?

Despite the fact that today there ise-mail, fax is still popular. Many large companies use a fax machine, explaining this fact by the fact that many extra letters, including spam, come through the mail, and in such a heap it is easy to miss something important. Fax also plays the role of a kind of filter and helps not to miss really valuable information.

If you are interested in how to send and receive a fax, read the relevant articles of our website - How to send a fax and How to receive a fax.