[fluorescent light switch turns on] [in a robotic voice] – Hey, everyone! And, welcome back to Matt Talks Tech!
[cheerful synth background music plays] So, first off, our whole brain exists
on this big thing of gray matter that everything is plugged into, right?
For a computer, that’s called the Let me show you guys
a motherboard. This, right here,
is a motherboard. Now, pretty much everything in a computer
is going to connect to this. Motherboards,
CPUs, RAM, – they do not come as one size fits all,
and there have been CPUs and motherboards for generations, for decades. I have HERE
a motherboard from [background music fades away] [happy 80’s beat plays] the 80’s.
Now, this is not particularly a motherboard for a PC; this motherboard is actually
a motherboard from an old printer. As you guys can see, it’s got some similarities
to the board I showed you earlier, BUT
a couple differences. So, everything back in the 80’s
basically had its own computer inside of it. If you had a printer, for example, like this,
it had its own computer inside of it. If you had an old floppy drive
(except it was an external one), [floppy disk ejects]
like this guy – You can tell it looks like a
“save icon,” right? That’s because, back in the day,
people used to save stuff to this. This is very similar to a hard drive,
it’s just a lot smaller, and it can hold very, very little:
it holds a lot less than a hard drive can. CDs, floppy disks,
thumb drives, – they’re-they’re all the same thing:
they’re removable storage. But if you had an external floppy drive, back in the day,
it had a computer inside of it. [floppy disk scrapes table] Basically, back in the day,
everything had its own computer inside of it. That’s still kind of the case today.
I wouldn’t really call the circuitry inside of your printer
its own computer… It kind of is, but it’s vastly different from, let’s say, your desktop,
like, one of the desktops behind me: it’s VERY different. They’re very purpose-built today.
They’re very specific. THIS thing, however,
was very similar to the computers of its era. They, essentially, didn’t know any other way to make it
so that one device could do what IT needed to do, while a computer was talking to it,
so they just stuck computers in everything and made the computers talk to each other.
It was actually really cool! So…
this thing, right? Where is its CPU? Where is its RAM? Where is its input/output? And, where does it get its information from
“long-term memory,” right? Well, funnily enough,
it has ALL of that. Do you see this big, huge,
black thing right there? That is an old 8-bit micro-controller.
It’s very, very, very similar to a CPU. As a matter of fact, back in the day,
this is what the CPU looked like on your Nintendo, your NES, even your Original Game Boy.
Not the Game Boy Color, but the Original Game Boy
had a processor, a CPU, very similar to this inside of it. But, that’s interesting:
it looks like a chip (I guess that big, silver thing
kinda looked like a chip too, right?), but where is the RAM? Mm-hmm-hm-hm-h-hmm
This is your RAM. Now, it’s not as much RAM
as we have nowadays. For example, the RAM I showed you earlier,
that computer had 8 gigabytes of storage, okay? This has…
SO much less than that: in magnitudes of millions less,
but that’s its RAM right there, okay? But, this computer right here needs access to
long-term storage and it needs input/output, right? Now, this part is pretty cool:
where is its input/output? Right here! It’s very similar to the input/output
on our motherboard, right?: Here’s your processor, here’s your RAM,
here’s your input/output. The cool thing about this printer here is:
it doesn’t need a hard drive. It needs a very specific set
of programs in order to print. Pages aren’t gonna be completely different all the time;
you’re not gonna be feeding your printer pages that range from this big to this big, and
the letters aren’t gonna change every single time, right? So, the printer exists in a very strict environment:
here’s a piece of paper, I’m gonna print letters on it. This thing, right here: that is its long-term storage, it doesn’t need very much.
Because we have all of these components now, right? We have a functioning computer, and this thing is ready
to send information to its printer components, okay? For example, this processor receives a print job
from the input/output. You just hit “print,” and all the information
went through this little connector, from the I/O, straight to the processor,
and the processor says, [finger snaps] “Wake up, everyone!
We have a print job.” He takes all of that information,
the whole Word document, and he puts it right here on the RAM,
and the RAM’s like, “Hey! I’ve got this.” And, as soon as the RAM does that, the processor says,
“Okay, RAM. Hold on to the document.” And, he goes over to
the long-term storage. The long-term storage has a bunch of programs in it,
and it says, “Okay. So, we’ve got this many pages, this many paragraphs,
the lines are situated here, okay? So, take the information you’ve been given,
format it like this, and, then, go ahead and send the information
to the rest of the printer.” The processor says, “Cool.” So, he takes
the program from his long-term storage here, he takes the Word document you just downloaded
to the printer, he processes them together, sends the information out here.
The motors start turning outta here, the display on the printer
comes out here, and before you know it, you have a paper version
of the Word document you just printed. So, that’s how computers generally work.
There ARE some differences here and there, but for the basics, you just need to remember that –
THE BASICS: or CPU, or Random Access Memory, Okay? Or a hard disk drive,
or a flash drive, this is called an EEPROM,
– you don’t need to remember what that is – it’s long-term storage. If someone says storage
about your computer, that’s what they’re talking about. You need to remember I/O
because you’re gonna plug things into it: it’s gonna output video, it’s going to output sound,
and it’s going to take in- it’s gonna take in information from your keyboard,
from your mouse, and anything else. That, right there, is the basics! [ta-da!]
But, are all motherboards created equal? [crickets chirping] No. I showed you guys this, right?
But, then… I’m confused, WH-WHAT IS THIS MONSTROSITY?! Like, what is this?! This is insane-looking!
Why is there big, blue, metal things?! What’s- Ah-ha-ha! Fooled you with the different colors, okay?
This, right here, is a socket – I don’t have a processor for this. I’m sorry, okay? –
[in a high-pitched “helium” voice] but this, right here, is the socket
where a CPU would go. So…
if that’s where the CPU goes, what are these two things, right here?
These, right here, are the RAM!
[clicking noises] But, this stick of RAM is just that: a stick of RAM.
It looks cool because it’s marketed to gamers, and you want your computer to look cool. Wow!
[in an annoying, douche-y voice] But, it’s just a stick of RAM, it’s memory. It does the
same thing: it holds on to information for the processor, and it says, “Hey, you know that,
you know, really cool picture you had, you know that Word document,
you know that YouTube video you’re streaming (kinda like right now),
that’s all on this guy.” He just looks a little bit different.
[clicking noises] But, where’s the I/O?
Well, similarly enough, it’s right along here.
You guys are gonna recognize a lot of it: you see the little, blue monitor
connector right here, you see the USB ports
right along here, you see the networking port
up here, and you also see all of the speaker ports right here
(the headphone jacks), right? Very, very similar layout to the green one!
It’s a little bit different in color, but it’s all there. Same thing
about your storage: it would connect with a couple cables up to this,
and then you’d have your long-term storage, right? And, I also showed you guys plugging a video card
into the previous computer, right? Modern day computers have components
that are compatible with one another, so I was able to take this card
out of the little, green board we saw earlier, and I can slot it
right into this black board. Just like this!
[click] [grunts] Now, we have
a graphics card [tap tap]
in our motherboard! [scraping sound]
There aren’t just video cards: here is a RAID card.
You guys don’t need to remember this, okay? RAID basically means you take a bunch of hard drives,
and you make them copy each other so that way if one hard drive dies,
you’ve got backups of everything. But, let’s say this motherboard
doesn’t do that for you out of the box.
And, I’ve got this little, extra slot right there. [clicking noises]
It goes… right in here.
[click] So, now we have a motherboard that has
a video card, RAM, “CPU,” and a RAID card. Now, I’ve given you guys
a little bit more than the basics, but with this information, you should be able
to look at a computer and understand how everything is working beneath the hood.
If you guys ever do need to, like, pop one open, DON’T! [emergency siren noises]
Don’t do that unless you have had more training, but if you ever do look inside of one,
this is what’s in there. You’ll know, okay? And, this will give you
a good idea of how everything works, as well. If you’re ever wondering, “I AM writing a paper
for my class, but HOW is that happening?!” Now, you know!
It came off your hard drive, into your RAM, your processor sent all that information to this little port
here, or it sent the information to the video card, and the video card
output all the information to your monitor: [accordion plays] VOILÀ!
You have your Word document in front of you! So, I hope you guys enjoyed this video of me rambling about the basics of computing,
[cheerful synth background music plays] and if you did enjoy it, I want you to know
we’re going to take a deeper dive into all of this. Since we’ve talked about old 1980’s 8-bit technology,
I’ve shown you what that kinda looks like, as well as modern-day technology,
and what that kinda looks like, (I should be talking about both of those in,
probably, their own separate series), you’ll be able to come back to more videos
where I discuss things in greater detail, and we’ll also get into other aspects of computing,
such as laptops, phones, tablets, and I’ll explain how those things are computers,
even though they’re really small, thin, and light. If you guys enjoyed this video,
if it was helpful to you in ANY way, if it explains some things
that nobody had ever told you before, give it a “like.” And, if you guys have questions, if you’re
the newcomers and you ARE learning new things, leave us questions in the comments down below, too.
I would be happy to answer any questions you have. I invite you to subscribe to my channel,
it helps me out a lot, and I’m excited to see you guys
in the next video, okay? Thank you and have a wonderful
rest of your day! Bye! Nobody-hibbada-habbada?! What was I saying?! Oh, and just so you guys know,
this is not a 3D-printed “save button.” You know who you are… [deep breath] Bye! Panda?! I’m done! I’m done. I’m done.
I’m done! I’m done!!! [background music gets louder] [fluorescent light switch turns off and
background music fades away]