Communication Technology encompasses the methods used for the exchange of information through different mediums. As technology has advanced, communication has evolved into two primary categories that form the backbone of our connected world.

• Telecommunication: This refers to the transmission of information—such as voice, text, and pictures—over a distance using electromagnetic means. A common example is information sent through physical cables.
• Wireless Communication: This is the technique of transmitting information between two or more points that are not connected by a physical wire. The most common modern wireless technologies use radio waves to carry signals.

A core process that makes modern communication possible is Modulation. Think of it like putting a letter into an envelope to send it through the mail. Modulation is the process of placing a message signal (the letter) inside another signal (the envelope) so that it can be physically transmitted over the airwaves or through a cable. The reverse process, called demodulation, is what happens at the receiving end to “open the envelope” and retrieve the original message.

From the digital realm of information exchange, we now turn to the biological realm, where technology is being used to understand and engineer the very code of life.