| A | B |
| COMMUNICATION SYSTEM | The many parts that work together to send and receive messages. |
| SOURCE | a device or location from which signals are being emitted |
| ENCODER | takes information in one form and changes it into a form that can be sent. Microphone- encoded to electrical. Antenna encodes electrical current into electromagnetic waves for transmission. Digital Camera: images into computer code. Many devices can use several encoders such as cell phones: microphone, digital camera, and an antenna. |
| TRANSMITTER | a device that sends out a signal |
| TRANSMIT | send energy from one place to another; to communicate by sending a message |
| SYSTEM | a group of related objects that work together to perform a function |
| COMMUNICATE | to give and receive information |
| ANALOG SIGNAL/WAVE | a continuous wave of smoothly varying height (amplitude), can have more interference |
| DIGITAL SIGNAL | assigned a specific value to the height of a wave at small intervals along the wave, less affected by noise. |
| DECODER | Machine or device that converts information into language. |