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ODW 6.3
Our Digital World 6.3
| Term | Definition |
|---|---|
| twisted-pair cable | A type of cable consisting of two independently insulated wires twisted around one another. This type of cable is used to transmit signals over short distances and is used to connect a home’s hardware telephone system or an Ethernet network, for example. |
| coaxial cable | The cable used to transmit cable television signals over an insulated wire at a fast speed (millions of bits per second). |
| fiber-optic cable | A transmission medium that uses a protected string of glass that transmits beams of light. Fiber-optic transmission is very fast, sending billions of bits per second. |
| cellular network | A transmission system that sends signals through a cell tower, used to transmit both voice and data in every direction. Each cell tower has its own range, or cell, of coverage. |
| cellular transmission | A signal sent using a cell tower. |
| microwave | A high-frequency radio signal that is sent from one microwave tower to another. Because the signal cannot bend around obstacles, the towers have to be positioned in line of sight of each other. |
| satellite communication | Space-based equipment that receives microwave signals from an earth-based station and then broadcasts the signals back to another earth-based station. |
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