(Travis Gresens).
Next, we’ve got a CD-ROM drive. CD standing for compact disc. ROM standing for
read-only memory. We’ve got a CD-ROM here and I
think this one is just a CD or you’ve got another device
that will do DVD-ROMs. And DVD stands for
digital video disc. We have a drive here that I
actually took off the metal case so that you could actually see
that there is more stuff to it. They also call it an optical
drive because this has got a little laser and some
sensors in here. It will actually send a
laser up and it reads this bottom side of your CD
that is in there and it watches how that
light bounces off. And it depends on if it
is going straight on or if it bounces off to the side. If it bounces off to
the side, it sees that there is data in there. It reads what is on there. (male speaker).
What’s the difference between CD and DVD, the type of laser? (Travis).
Typically, yes, there is different lasers and then
there is different capacities. CDs are the earlier ones and
then they came out with DVDs. Digital video had a lot more
information to be stored and they had to write
more information on that same type of CD. So they got more
information and they changed the type
of lasers in there. They’re a different
kind of wavelengths so it can, tighter
yes, smaller. And Blu-ray is
actual blue laser. There again, you can’t see
these lasers with your eyes because they are
a different spectrum. But yeah, they’re basically
it’s blue can read much, much more smaller data
than what a CD could. That’s kind of how they
came up with Blu-ray. Yes sir? (male speaker).
If you have a disc that you were going to
put in the CD-ROM drive, would it work in the
DVD-ROM drive. (Travis).
Yeah, typically, DVD-ROMs read CDs because CDs are
older and a lot of time. I know how to do that, that is
old stuff but if you take something new like a Blu-ray
disc and put it in a CD or DVD-ROM, it’s like I
don’t know what that is. It happened in the
future, and it doesn’t know anything about the future. But usually you can go back in
the past and read old stuff. But there again,
it’s an optical drive. It handles things a little
different because it’s optical meaning it’s visually
reading that information. Next, we’ve got input devices. These are devices that if you
want to tell your computer to do something, you have to give
it some sort of information and put that information
into the computer. And you put that information
in the computer by devices such as keyboards, mice,
scanners, some sort of way to get that information in. And then the opposite
is output devices. This is when you want to get
something out of your computer. You need a sound to play or you
want to pull up a website to get that information back to you it
has to display something. So it’s going to give you that
data back on as a form of text, image, sounds and here you
can have a printer or a monitor or speaker,
something like that. It’s going to give
you something back. Here’s some websites. I subscribe to a Maximum PC
magazine that I read. And that is their website. And a couple of these other
websites here are called modding websites where you want to
modify or “mod” your computer and make it look like something
completely different. I’ll give you an example. Here’s some floppy disks
I’ll pass around here too while I show these pictures. I split these things open. Basically, when you stick this
inside a disk drive here. It goes in this disk
drive just like this. Kind of like a CD, but it opens
up this door so it can read both sides of this material
that is in here. They call this a floppy disk
because it’s kind of floppy. It’s not real strong. And the stuff where it gets
the data is even floppier. You’ve got that. (male speaker).
Did you bring any of the big floppy disks? (Travis).
I was going to. I’ve got some. These are kind of old but the
disk before it were much bigger. They had like 10 inch and
8 inch floppy disks. That is the stuff that I grew up
with and when they came out with these, there were smaller and
held a lot more information. And then things kept getting
smaller and faster. If you want to see some really
cool PCs that don’t even look like PCs, we’ve got…a Japanese
inspired computer case with little wooden sliding doors. We’ve got fans that light up. Everything about this computer
has probably been customized. Anybody have any questions? (male speaker).
[unclear audio]. (Travis).
The fans? Usually to move air
through there because each device usually produces
some sort of heat. WIth electronics, when you give
it something electric power, usually you are going to get
heat in exchange and the more power you give it,
the hotter things get. And an up and coming slide
they will have some water cooled computers. There is a toaster that somebody
got a small maybe a motherboard from a laptop or they actually
sell small form packages, real teeny tiny things. And they’ve got all kinds of
little stuff and crammed it into a toaster. There are some really neat
computers out there. I didn’t have time to
grab lots and lots of stuff. Let me see if I can
pause this next slide. I think it is. This is in a Toyota Prius. If you look down here,
this is a Mac mini. It is not a full-size computer,
it is this little tiny box. But it has a motherboard in
there, a DVD drive. It’s got memory, it
has all of the stuff a normal computer would. But they are just really small. And there was a spot
in the dash where this thing fit right in there. Then they had to figure out how
to get it hooked up to this little touch monitor
and these cars. But as you can see, they got it
all working and they can watch DVDs or hop on the Internet,
check their e-mail. It’s got all kinds
of cool stuff. You can really do a lot of
things with your imagination if you can figure out how to get it
in there and make it work. It’s pretty neat when
you get it to work. I’ve got another Japanese
inspired case here. A little hard to see with
the dark pictures here. I think, there we go,
this is one I had some questions on earlier. Anybody know what all
of this white tubing and all of that stuff is? That is basically is what is
called a liquid cooled machine. It’s kind of like a
radiator on a car. They pump this anti-freeze
solution through these hoses and onto different components
on the computer that typically get real hot. And they use that
to cool it down. There is a term called over
clocking, you can tell your computer to use more power and
you can make things run faster by giving it more power. But if you give it more power,
it’s going to get hot. So you’ve got to
get it cooled down. So they run water cooling to
help keep those parts from getting too hot and
causing a computer to do weird things and shut down. Yes sir? (male speaker).
How does that not short circuit the [unclear audio]. (Travis).
It’s all self-contained and I think there
maybe another closer picture here, this one. You can kind of see the water
goes in and it goes across the surface here and it
goes back out. But all of that water is
contained in a little metal thing that makes contact so the
heat goes into this metal thing and it gets transferred
into this water. But water is never really
touching any of the electronics. It’s all contained inside these
individual little parts. But somebody took a long time to
paint things light and make things look neat and
color coordinated. Here is another Mac mini
in the dash of a car. There is an old Nintendo. I don’t know if you’ve
ever seen an old Nintendo. Let’s see if I can
go back to that one. And you can see, you used to
have to put the game cartridges in here and they’ve mounted
a small laptop CD-ROM, DVD-ROM drive there. And then there is the back of
the Nintendo where they had to cut out spots for
that motherboard. They basically had to cut open a
spot so you could get to the back of these pieces here to
plug in a monitor, keyboard, mouse, network, all of
that kind of stuff. More than likely, it’s not
a big board like this. It came off a much smaller board
that is probably much smaller like out of a laptop or
they just make smaller things that you can buy. (male speaker).
Is this the first one? (Travis).
Yeah, I think that was, I think it started
back over again. Any other questions? Yes? (male speaker).
The DVD one, that grey thing, what does that do? (Travis).
That is actually the top of this, and I took
the screws out of this so I can take it
apart and you can see. I’ve got power. Let’s see here. I can plug this in. You can see it work real quick. (male speaker).
I don’t know if you covered this before I got
here, but you hear the term dual core and quad
core, [unclear audio]. (Travis).
Not really, when they refer to dual core and quad core,
that is the–of course this is the socket–but
where the CPU, the actual chip that plugs into
here, that means they actually figured out how to get multiple
CPUs and they refer to them as cores but it’s
a CPU or a core. They’ve figured out how to
put two on the same chip. So the computer sees it. It used to be a specific place
to plug each one in and you’d have a server motherboard would
be great big and you could get like up to four, years ago. Now they still have multiple,
but now you can plug in two quads and technically get eight
processors out of just two devices that you plug in. And it just gives it more
computing power. Typically, your servers are
going to have a lot more, they’ll need a lot more
processing power. Let’s see if I can
hold this right where you guys can see this. It should spin up. Of course, this one is what’s
called the click of death, because it can’t figure out
where things are at to read it. It just sits there and clicks. But you can see it
happens pretty quick. [unclear audio]. Yeah, I can plug in a
couple of things. This is either a 5400 or a 7200. As old as this is, I’m guessing
it is probably at 5400 RPM. I forget that comes out to be
like 50 some mile an hour I think that that spins. I can plug in our CD-ROM drive
here and basically when I plug that in, this head there
it zooms back up to where it is supposed to be. And it is trying to spin
a CD-ROM and it knows that one’s not there so
it basically stops. (male speaker).
Do you have a CD? (Travis).
I do and I thought about that and I
couldn’t make it work. What happens, there is
another part of this on the top that it
smashes the disc on. It lifts this disc up and then
spins it and there is nothing for it to push up against. So it would probably
spin and fly right off of there right quick. So, for safety sake,
I didn’t do that. And it is going to try to look
for a CD and it doesn’t see it. So it stops [unclear audio]. I think that is all I’ve got. This doesn’t do much
of anything and then, oh I did hear the whistle. Okay, thanks guys for coming. [no dialogue].

Computer Guts – Part 2
Tagged on:                             

Leave a Reply

Your email address will not be published. Required fields are marked *