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Signals and Connections

Modified 2020-08-25 by jakerad007

Analog signals

Information can be transmitted through electricity:

  • Encoding in voltage (Seen in an IR sensor)

  • Encoding in frequency (Used for WiFi)

  • Noise, which can come from various sources, can distort or block the information transmittion done by the former

Digital signals

Our number system uses base-10 (10 symbols) to represent numbers, but there are many other ways to convey information!

There’s no reason we have to use 10 symbols, you can get away with just 2 – binary! (or other numbers, eight: octal, sixteen: hexadecimal) Here’s an ascii table that shows binary and decimal. ascii table

Your teacher may assign you to construct a flippydo - a useful paper device that can help you translate our decimal system into binary! flippydo instructions video explaination

Useful Resources

Analog vs Signals Video

Fun Binary Game!

Glossary