Analog vs. digital signals | Waves | Middle school physics | Khan Academy

[@kingrobertbaratheonofhouse6190]

I’m doing A level physics in the UK and this video is very helpful. Thank you

[@SuperGreatSphinx]

God Save The King

[@FranzFriedrich]

Very interesting and it helps to understand the different videosystems out there for drone racing and freestyle. There is a trend towards digital videosystems right now which i now understand better, so thank you.

[@Simran28106]

00:01 Analog signals reproduce exact signal, while digital signals convert to ones and zeros. 00:37 Communicating numbers using signals 01:10 Analog signals are susceptible to interference 01:40 Interpreting the 24 as static or binary 02:14 Binary system has two digits and decimal system has ten digits. 02:43 Binary to Decimal Conversion 03:11 Analog-to-digital converter (ADC) converts voltage to digital signals. 03:40 The signal is interpreted as 11000

[@QuantApplicantMattKulis]

decimal vs binary. fastest lesson in history!

[@stanf9898]

I thought you all were switching only to a grade school emphasis. However, if it will help me in medical school, please keep it coming!

[@G-Tarun]

MCAT prep is still on KA! And of course these school videos shouldn't be underestimated: Mastering the fundamental ideas is essential!

[@stanf9898]

@@G-Tarun ... with a disclaimer that they are moving away from that direction. I would love if they continued to make videos that supported me through my academic career. I'm just a little surprised to see a video aimed at Medical students after they stated they are no longer going to; a pleasant surprise.

[@G-Tarun]

@@stanf9898 Agreed. But I do hope they keep MCAT on the site even after that five-year timeline. Maybe revamped MCAT like SAT prep. I commented this suggestion on the KA discussion forums.

[@VesperAegis]

@@stanf9898 College grad here and I'm still getting plenty even from these middle school videos. Memory fades with time, so it's easy to forget some of the details and nuances of science that you think you had down pat from earlier. Given how short the videos are, it's nice to rehash over the fundamentals and sometimes gain a fresh perspective.

[@G-Tarun]

@@VesperAegis Thank you so much for this comment! I too love revisiting the basics, finding new things there, new questions to ask. It's important not to underestimate mastering (and remastering) the fundamentals. It is, well, fundamental.

[@sharonsolana]

That is pretty darn cool!

[@3monsterbeast]

Wonderful video, however, I learned this in Engineering school in college, it may have been tough to do in middle school :)

[@sharonsolana]

Another great video Sal!

[@jabo0222]

this was absolutely useful

[@tomichanjoseph9715]

very useful information ..Thanks

[@diegoarabit1202]

I'm learning this in College. 💀 Not middle school. I feel dumb now.

[@sharonsolana]

I'm a commercially-rated pilot, got A's in calc 1-3, and this video is helping me understand analog vs. digital signals. I studied aerodynamics and aviation electrical systems for my pilot licenses, but physics and calculus classes were not required. Don't feel dumb, just be grateful for the video.

[@diegoarabit1202]

@@sharonsolana lol yeah thanks. Oddly enough I'm studying Avionics in College right now here in Canada. This video basically sums up analog theory basics.

[@sharonsolana]

@@diegoarabit1202 Hey Diego, are you working on your A&P license? In the U.S., we call it an Airframe and Powerplant license. On 60 Minutes tonight, they did a show on Fogo Island, Canada.

[@antaiiiii]

same 💀

[@SaintIC]

@@sharonsolananever got back to you huh

[@LearningGuy-y6f]

I'm understanding from the visual: Analog is graphically precise and digital is not; Analog graphically looks sloppy, digital looks clean. I feel there is something I'm missing. I see from the video's description that Khan Academy claims the difference between the two is, "... the reliability of analog and digital signals and the differences between them." But I fail to realize this, still.

[@viviangreat8062]

Thanks this was helpful

[@SheetalGodhankar]

Im learning it in 10th IGCSE

[@BurRun-kt3tf]

អរគុណThank❤

[@voidcamel5981]

I am so confused about the binary bit. How does 11000 equate to 16, 8, 4, 2, 1??

[@voidcamel5981]

nvm I got it now, sorta.

[@SaintIC]

@@voidcamel5981it’s pretty simple

[@SaintIC]

Maybe if he out it in full 8 bit format, it would be easier to understand

[@sumitdhiman9026]

every number is a subsequent power of 2 , first position is 0th position so its 2^0 = 1 , 1st position 2^1 = 2 and so on till 4th 2^4 =16 . and in this 11000 only 3rrd and 4th position value of 2^ will be written down and added because (2^4 = 16) + (2^3 = 8 ) = 24 .

[@Victor-tl4dk]

Why do you call this "Middle school physics." I'm 19 and want to learn about this now. Sure middle schoolers should be taught this, but learning is for all ages.

[@Polnaratti]

Often times, students can’t find videos that properly talk about topics they’re learning in a way they can understand. Middle school is there so that middle schoolers know that this video is easy to understand for them.

[@stitchlover-oj2vp]

Bro I'm middle school not college!👀

[@erimerzeybek6703]

middle school physics lmao. I'm 24