Transmission devices are tools that facilitate the transfer of information or energy from one point to another. Common examples include cables, fiber optics, and wireless transmitters. These devices are essential in various applications, such as telecommunications, broadcasting, and networking, enabling communication over long distances. In the context of telecommunications, transmission devices convert signals into a format suitable for travel. For instance, modems modulate and demodulate signals for internet access, while repeaters amplify signals to extend their range. Overall, these devices play a crucial role in ensuring efficient and reliable communication systems.