Digital Signals vs. Analog Signals

The effects on a Phone

When is this device used?

Analog: A landline was used as old phones like rotatory and wall phones to call in the United States. 1876-1964


Digital: Now a days a digital cell phone is used rather than a landline phone, anywhere. 1965-today


"Landline Telephone Facts." Science. OpposingViews.com, 2008. Web. 11 May 2016.

"Cordless Telephone." Wikipedia. Wikimedia Foundation, 29 Mar. 20162016. Web. 11 May 2016.

Where is this device used

Analog: These phones are used at home or connected a wall in a building.


Digital: These can be used anywhere and everywhere.


Science Kids. "Cell Phone Facts - Mobile Phone Information, Interesting IPhone Apps, Technology." Cell Phone Facts - Mobile Phone Information, Interesting IPhone Apps, Technology. Science Kids, 1 Feb. 2016. Web. 11 May 2016.

Why is this device used?

Analog: Modern cell phones are capable of much more than just sending and receiving phone calls.


Digital : Mobile phones used in today’s world allow users to send and receive text message.

For what is this device used?

Analog: The cell phone has become an important communication tool that is used by people all over the world to keep in contact with each other at any time.


Digital: The cell phone has become an important communication tool that is used by people all over the world to keep in contact with each other at any time with longer distances.


Science Kids. "Cell Phone Facts - Mobile Phone Information, Interesting IPhone Apps, Technology." Cell Phone Facts - Mobile Phone Information, Interesting IPhone Apps, Technology. Science Kids, 1 Feb. 2016. Web. 11 May 2016.

Who uses this device?

Analog: Now a days the elderly with houses that still have them in it possibly have it in there houses still.


Digital: People with mobile phones that can be carried around with them

How does this device work?

Analog: A landline telephone works with a metal line which uses a radio waves for transmission.



Digital: "Portable phone that replaces cord with a radio link."


"Landline Telephone Facts." Science. OpposingViews.com, 2008. Web. 11 May 2016."Cordless Telephone." Wikipedia. Wikimedia Foundation, 29 Mar. 20162016. Web. 11 May 2016.