Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

Digital Literacy How the Internet Works The Internet Connecting to the Internet

Vicente Ayala
seal-mask
.a{fill-rule:evenodd;}techdegree
Vicente Ayala
Python Development Techdegree Student 956 Points
Posted by Vicente Ayala
.a{fill-rule:evenodd;}techdegree
Vicente Ayala
Python Development Techdegree Student 956 Points

Is it digital data to electrical signal or digital data to digital data?

At 1:03 Joy states modems turn digital data from your computer to digital data to be transmited over cable but the video slide states modems translate digital data from your computer into electrical signals to be transmitted over cable or telephone wire Which is correct?

2 Answers

Steven Parker
Steven Parker
229,732 Points
Steven Parker
Steven Parker
229,732 Points

She actually says, "digital signals to be transmitted over cable...".

Both the terms "electrical signals" and "digital signals" describe the same thing in this particular example, though I would say "electrical signals" might be more technically accurate.

disappointedkenji
disappointedkenji
1,547 Points
disappointedkenji
disappointedkenji
1,547 Points

All digital data/signals is electrical aside from the physical medium that binds them(Motherboards, CPUs, SSDs, etc). Every term used to describe the process will ultimately be an electrical signal.

Hambone F
Hambone F
3,581 Points
Hambone F
Hambone F
3,581 Points

Digital doesn't necessarily imply electrical. Voltage on a wire is the primary way, for sure - but other common mediums used to carry digital signals are radio waves (WiFi, Cellular, etc) and light (fiber).