How The World's First Computer Images Were Created
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- เผยแพร่เมื่อ 13 มิ.ย. 2022
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I show you how pictures are created on oscilloscopes and how these were used as the first screens for computers.
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My electrical engineer grandfather told me how the first TV image he ever saw was while working in France in the 30s when England started their first broadcasts, he and a colleague discovered they could pick up the signal from across the channel. A bit of wiring of discreet components later and they were able to watch the broadcasts on an oscilloscope.
Wow, that amazing
I've heard of these, but a certain German interrupted this.
Man I've been trying to understand this for 30+ years and you just explained it so well and simply, thank you.
(.)(.) Was actually the first image made with computers.
That’s the power of the internet
Oh god
30 years? did u have this question all of a sudden at one point in 30+ years and left/forgot about it? or were your studying/researching about this and still couldn't understand it?
My brother somehow got an oscilloscope when I was 12 in 1973 I played with it for hours. We didn’t have PC’s then but I was fascinated. I think it had knobs to change frequency and make patterns and shapes. I think it was from some dismantled military base.
U would think people on TH-cam are little kids but most of them are old
@@Ter-ter721 bruh
@@RonnieMcNutt_Mindblowing id take that as a compliment i know 40 yr olds who barely know how to turn on their phone let alone make a youtube account and make comments i get surprised when an 80 yr old is on yt doing that
@@Ter-ter721 it's the opposite, kids in the comments are rare
@@900bz lol sooo true
the slow refresh rate on your oscilloscope is probably because of the memory depth. you were using 7M points of memory there, that takes a while to process. If you lower the memory ir set it to auto, it should be much faster
hmm thank you, I will try to change it and see if that helps!
Make another video! This was Cool!!!
@@TheActionLab it is said that "we can look at the past but can't go the past,you cant look at the future but you can go to the future"
Please do a video on it
The slow refresh rate on your oscilloscope is probably because the screen's projecting at 60hz whereas the camera's capturing at 60fps.
@@ARAKKONAM_AVENGER how is your quote related to science? Go to a philosophy channel and ask them
It's incredible how fast technology has exploded in the last 50 years or so
3:40 - Lissajous patterns. Looks better on an old pure analog oscilloscope, as opposed to the digital storage scope he's using. You can use this X-Y mode for computer vector images, as shown here. Back in the early 80s, instead of audio files, I programmed the XY pattern onto a simple ROM and just "ROM dumped" the data into 2 D to A converter chips. One for X and the other for Y. Then fed those two signals into my old scope (Dumont 304). The image was a Don Martin (Mad Magazine) character. I took a picture of it with a "scope camera", which used Polaroid film. That's how it was done in those days.
Bruh i hate the experiments with weibridge oscillator.
This is an amazing example of how far we have gotten in technology and as always nice video action lab 😊
Ye
@Don't Read My Profile Photo That is off topic man, stop saying that please!
@@ryanstoysgamesandbuilds5720 balls
@@ryanstoysgamesandbuilds5720 - Don't bother replying to spam bots. You're just making their name show even more. Just report it.
That IBM engineer was also the 1st ABSOLUTE MADLAD
You can probably change some settings on the scope to make the XY plot update faster. But scope music never looks right on a digital scope, you have to do it on a cathode ray scope.
This is one of the coolest channels on the internet! Love your videos. Keep them coming 👍🏻
I literally just got the analog CRT X/Y display I bought off eBay days ago and here you are making a video about exactly the things I wanted to play around with. It's also pretty just as a music visualizer for when I listen to my vinyl records
Very interesting and a longer video as a bonus! Congrats on 4 million too
What a very thorough and easy to follow explanation of computer images Great job!
Coolest stuff I have seen in recent time. Thanks a ton for creating this vid !!
In the 80's I pulled the deflection coil off an old tv's CRT (left it wired up in plastic bag) and put a spare one on the CRT, then hooked the left/right of a stereo to the vertical/horizontal deflection coils. I think the idea was from popular science or electronics. Joe Walsh's "Life's been good" looked pretty cool, as well as songs with long bass sustains.
Wow, it's very impressive that you can actually make images with sound waves
I learn so much things with this channel. Keep it up!
It is even more amazing when you can get pleasant sound waves from images.
@@filker0 You're right
bro will be shocked to learn light is just sound but alot higher frequency. xrays r essentially sound, the big telescopes out there arent "looking" at light from billions of years ago, they're listening to the frequencies, that for us are no longer visable as they were at their creation. the frequencies shifted down. nothing about JWST or hubble is a "telescope". looked at an EDU paper talking about this phenomenon, found it hilarious they first started it off saying how sound and light waves are very different the only thing similar is that theyre waves, then they go on to explain why sound and light are exactly the same, lol, essentially gave me the conclusion that YES, EVERYTHING IS A WAVE IN THIS WORLD AND EVERYTHING OSSILATES, EVERYTHING HAS A MEDIUM FOR ITS FREQUENCIES OR ITSELF TO TRAVEL THROUGH. sound can travel through a medium, well light cant travel without a medium either. and its stopped by objects meanwhile sound could travel through them. all depends on the, you guessed it, FREQUENCY. damn i should be a university science teacher. would light frequencies actually be able to travel through a "vaccum" if the vaccum itself isnt perfect and the vaccum is a medium of its own. filled with particles tbh.
Wow, you can get some amazingly realistic images! It looks EXACTLY like there's smoke coming out of my oscilloscope!
Whoa, that's my boy, loved it
Man to be honest I love your channel because I love scince and also you make very intresting content so please keep it up!
I was waiting the whole time for you to mention Jerobeam Fenderson, but it's still really cool that you showcased some of his works here!
Great explanations as always, very interesting topic. Thanks for sharing. :)
This channel never makes me bored
Love the content! Please work on how a video camera moves the images it captures and is viewed on a television.
By watching your channel I started understanding things which I didn't even know before and that is pretty amazing!!! I am a primary school teacher and believe it or not, thanks to your channel i am able to explain complecated things to kids so that they understand as well 😊 very, very happy about that 😸👍
when you figure out teachers have normal lives:
"I'd never think I'd see a teacher make a spelling mistake"
@@YourGuyAJ if i did i am sorry, English isn't my first language and my phone is set up in my native language 😋
@@123UpNorth321 I'm Soo sorry because I was the one reading it wrong.
@@YourGuyAJ hahahaha okay i wasn't offended in any way 😋👍 have a lovely day 😸
@@123UpNorth321 you have a lovely day as well
Cool! thanks James!
Hey, this reminds me of a project I did about hooking a sound card into a laser projector. This produces images in a very similar way as you showed with the oscilloscope. The light of a laserpointer is redirected with mirrors driven by that voltage. You should definitely look that topic up some time, really cool stuff.
prob one of my fav episodes yet
Excellent video!!! Precise, informative, well executed!! 👏 ❤
4:05
For it to be a perfect circle, the second wave needs to be offset one-fourth of the waves' frequency in either direction.
This is created due to sine and cosine waves doing a perfect circle when they are plotted like that.
P.S. You can simulate this image generation on desmos! Just make a point like "(cos(ta), sin(tb))" and change the a and b variables. (by the way, I recommend increasing the limits of the t variable to something like -2pi < t < 2pi)
Why a quarter? My first instinct is a half since it’s symmetric and so is a circle.
@@kyle5555 a quarter offset relates to 90 degree of phase difference. With half offset, it's 180 degree, the resulting plot will be diagonal line. It's hard to explain it without pen and paper, if you're interested more, you can search yourself about "Lissajous curve"
@@rosyidharyadi7871 So quarter offset is pi/2 rad.
@@rosyidharyadi7871 thats honestly a perfect explanation and makes sense. thank you!
I think it would look even nicer with an analog oscilloscope.
The first arcade video games used vector graphics too. Tempest and Asteroids were two of the most popular.
Action lab flexing their equipment stash. Epic video
The fact that thats the first computer image ever created by humanity says a lot...
That's not the first computer image ever created, that's the first computer image of a human
"What is it that women don't understand about men?" "HMMMMM CHEEESEBURGERS!"
(.)(.) Looks familiar doesn't it? Well that's what i would call the first images.
That men are in awe of the female form? I mean, that's kinda obvious.
ancient sculptures apparently were of women
Very cool experiment.That is beautifull.
This video really resonated with me.
thank you for sharing video 🙏
I really want that painting! So cool. I hope you have them available for a wgole
Very helpful
Smarter every day has a similar video
As someone who depends so much on technology, this fascinates me
I discovered oscilloscope music on a video of SED and got into it...but I never imagined that it actually was "resurrected" from the past
Destin at Smarter Every Day did a great video on this and gave the inventors of it a really great shoutout.
Thank you for being you! I ordered the Brink of the Black Hole. And Hello from Anchorage Alaska
I love oscilloscopes. Greatest fault finding tool for electronics available
Bestest video ❤️❤️
0:34 "We know it's alternating, it's called AC Current, but how fast is it alternating?"
HERTZ/FREQUENCY FUNCTION BE LIKE:
In the 80'ties I hooked up my walkmans stereo output to the XY of the analog osciloscope on the technical school. Pink Floyd look great :-)
this gave me a flashback to the mid 80ies when ii and a few friends built an laser driven contraption which could draw shaoes on the walls of houses using only mirror mounted on what would amount to rotors in an motor. really cools stuff and all hand made and controlled by an 8088...
This was a fun one
This how a cube sounds like, Is really a meaningful sentense here.
"This is what a cube sounds like."
I think my brain broke a little... but still fascinating!
I love when you make 10 min videos
The oscilloscope looks like an advanced microwave
🤣
Very cool for old blokes like us!
It always blows my mind how this machines exist. Like what over a million times per second
I like your scope, very much.
Stereo shaping with a vectorscope is something I do all the time for music production.
If one day I happen to have some extra money, I shall buy myself a really good oscilloscope. You can do some really cool stuff with those.
Good explanation on this video, as a precursor to what would become late 70s / early 80s arcade games such as Asteroids which used vector graphics :-)
Gotta do this in our physics workshop
5:40 Can you put in a picture and have the voltages read out whatever would make the image? Ex. Crop circles?
Amazing
Cool video
You are doing Great
There's a lot of multimeters that also measure frequency, but I understand why you had to bring it into discussion :)
Reminds me of cymatics. Very cool!
The Disco Biscuits need to utilize that tech and incorporate it with their music and light show so sick
You really need and 'old' school analogue CRT scope for this.
Nice content
This was cool
I dragged the red bar to the right at 60Hertz exactly when your in video commercials started. Next time save them for the end!
Kinda feel like an analog scope would make this much more beautiful.
On the Voyager probes there is a golden disk, where one side has a sound track, that encodes images.
Aliens are gonna love that, when it hits their city at 36,000 miles per hour. At least they might be able to decode the images and know where to send their revenge attack.
It is perplexing why they call it Alternating Current. It should be Alternating Voltage. The current is a function of the load (resistance).
If the load doesn't change, alternating voltage leads to alternating current. It's actually Ohm's fault - he stated that "the potential difference across a resistance is proportional to the current flowing through it." We would probably state it as the current is proportional to the potential difference, based on the principles of cause (potential) and effect (current).
As a follow up, do Fourier Transform.
It just makes all of these equations easier to do and understand
Everybody needs an oscilloscope!
I love how I can still enjoy his videos when I don't understand 80% of the stuff goin on
6:54 that sound reminded me of the old car racing video game that could be plugged into the TV set.
wow, that was interesting!
It was meant to be, otherwise n9 one would watch it
Pls make another video about this. You gave a very good overview but I wanted to study its root concepts. Many people wanted to actually. So it would be really nice if u could explain it briefly
That's why Google exists?
@@view6998 you are right but not relevant.
I think you should mention that, when you are connecting ground lead of the oscilloscope to neutral line (you are making literal short) you could get imbalance and in worst case scenario - fry your oscilloscope.
To prevent this, oscilloscope is usually connected to power through separation transformer or is battery powered.
Nevertheless awesome project for making XY images :D
I'm pretty sure that's what he did, hence the variac. He didn't need it as far as voltage goes since that scope can handle 400Vpk. But it isolates the output from the input (as long as you don't connect to earth which is common to input)
7:45 how does the program read the image last long or based on a 2d axis x/y? Then how would it read the cube or more advanced 4d 11d images?
Those are the so call Lissajous figures, nice video thanx 👍
Lissajous
@@billr3053 👍
@@franciscojavierramirezaren4722 No problem. I used to play with Lissajous figures on an oscilloscope when I was around 14 in the late 60s. And 110V !!. I didn't know what they were called then.
Cool!
1:27 "That's why when you film ... a lot of the time the voltage is actually zero ... you see lights blinking 60 times per second"
No, a cycle is when the voltage returns to the starting point.
60 Hz is 60 cycles per second, or once every 16.666 milliseconds.
The voltage goes from zero to positive in 4.166 ms, then back to zero after 8.333 milliseconds, then goes negative at 12.5 milliseconds and finally back to zero at 16.6666 ms.
As you can tell here, voltage passes the zero mark TWICE in every cycle. So the lights will go dim 120 times a second at 60 Hz.
If you see the lights blinking 60 times a second it is because your camera only records at 60 frames per second. But if you see the lights blinking at that frame rate, you would really see more of a slow strobing effect or actually not see light (at the source) at all as it would be sync with the frequency of the grid. Which is HIHGLY unlikely.
Adding to that, most cameras don't actually record at exactly 60 FPS but rather 59.94 fps (which is NTSC standard) so when you film stuff that actually oscillates at 60 Hz, you see broad lines strobing over your footage when the light source is responsive enough to actually show flickering.
If you film an incandescent bulb, you won't really see much flickering because the filament keeps glowing at a smoothed out constant temperature.
It's also the reason some people get headaches from fluorescent lights as they actually do strobe at 60 (50 in Europe) Hz. Some people are extra sensitive to these flickers and thusly need to be around incandescent lights or really high frequency LED light sources.
That was fun.
Great presentation! I have been fascinated by vector graphics since i was a wee child playing with my uncles scope in the garage!
I think you may have intentionally simplified by saying it take less processing power to render vectors, but, that I feel that is misleading.. a better statement is it takes less data, but infinite digital processing! That's right, 😅 Infinate digital processing that's because analog processing is infinitely accurate at the expense of not being precise, usually with about 2% errors or differences between everytime you run the same data through!
Of course, the way you said it fits in well with the script and does not add too much so hopefully this comment is useful
Sooo cool
Great video. Some multimeters have a Hz/Duty Cycle measurement, I couldn't tell if yours has it. But mine shows that wall current is at 60 Hz and 50% Duty Cycle.
Oh, and if you're into oscilloscope drawings and graphics, you might want to find yourself a Vectrex game console! The Vectrex has its own built in monitor and is based on the same kind of vector graphics you see on your oscilloscope.
The new digital storage oscilloscopes (DSO) can't refresh like the old Cathode Ray Oscilloscopes (CRO). CROs are bulky and DSO has a lot more features despite being small and lightweight though.
Cathode Ray tech is so superior in many ways compared to the digital counterparts for so many things. The peak level CRT monitors and TVs still rival and even surpass modern display technologies in many ways, and those are basically *really* advanced CRO’s.
@@itsd0nk I love my CRO, it has features such as a proper, old-fashioned component tester which plots voltage curves. From that you can even tell if diodes are faulty, and where they start to break down, it can even test combinations of components in-circuit. It just takes some experience to recognise the different shapes, but it's a very useful tool. Plus, when using it just as a scope, the line is very bright and precise, none of that nasty digital updating and noise
Don't put a scope probe across mains electricity, even with a Variac (autotransformer) lowering the voltage. The ground lead of the probe is grounded to protective earth, so it's very likely to damage the scope. You can only measure by either isolating the scope from mains, or measuring an isolated AC, or by using differential scope probes.
Just a question if you had a laser and bounced the beam on speakers could you drawn the same way as in a scope?
Make another video with a nice analog scope in the future if you can get your hands on one!!!
You are great
With oscilloscope music, the best results can be seen with using an analogue oscilloscope.
Just made an order for the Brink of the Black Hole. Greetings from Alaska!
What happens if you use a 3D printer inside at vacuum chamber would it affect the 3D print in anyway could it make it stronger
Pro Tip: You can get something called a high voltage differential probe to measure higher voltages on an oscilloscope.
Pro Tip #2: If this is the first time you are hearing of this kind of device, you probably don't have any business working with those voltages.
James: This is the very first image of a human image ever on a computer screen..
Me: Hmm.. That explain my hot desktop wallpaper ever.
The first computer generated film was made this way in Sweden 1960. It was a 49 second 3d animation of a planned highway.