Notes 22

Comments

1-Information can be transmitted as radio, TV, voice, or data.

2-All info is transmitted as analog or digital.

3-Waves are analog because they are continuous.

4-Digital data piggybacks on analog waves to be transmitted.

5-Data is now mostly sent in digital format.

Questions

1-Why does digital data have to piggyback on analog data?

2-Why is data more commonly sent on digital waves now?

3-What causes analog data to turn into digital data?

4-Why must data be processed before being sent?

Words

1- Analog data-information represented as a continuous wave in which there can be infinite variations between two points.

2-Digital Data- Data represented as bits that are either on or off.

3-Noise-electromagnetic radiation.

Summary

1-This section talks about how data travels on wireless waves.