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### Course: Middle school physics - NGSS>Unit 4

Lesson 6: Digital signals

# Analog vs. digital signals

Information can be stored and transmitted using an analog or digital signal. Analog signals reproduce real-world data, while digital signals convert this data into binary form. Interference can distort analog signals, making them unclear. Digital signals, however, remain clear despite interference because they only need to distinguish between ones and zeros. Created by Sal Khan.

## Want to join the conversation?

• Is it just me or did that information just not stick? somebody please explain it for me
• What is one plus 1
• it's 2
• What exactly are binary numbers, and what are they for?
• Binary numbers use the binary system. There are other math-related videos on Khan Academy explaining it in detail, but basically, our normal number system, or the decimal system, is called a base-10 number system (it has 10 numeric signs). The binary system is base-2, which means it only uses two numbers (1 and 0). In the decimal system, the place values are powers of 10. In the binary system, the place values are powers of 2. So 11000=16+8+0+0+0=24.
• How was your winter break guys
• I did not have one....
(1 vote)
• What are the main differences between analog and digital signals?
• anolog is infinite and digital is not.
• What are binary codes used for?
• for computors
• Which type of signal, analog or digital, is more susceptible to interference and why?
• Are these examples from the video the only examples about analog and digital?