welcome my name is Jason Johnson and thank you for watching this video if you
find anything helpful in this video or any of my videos just go ahead and
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questions just leave a comment below and I'll try to get back with you as soon as
possible if I don't have an answer to your question I'll try to point you in
the right direction okay well this video is going to be
chapter one in the video series for the netacad IT essentials course we are
going to cover in Chapter one the personal computer systems so let's get
started with this so when we're talking about the personal computer systems that
we first want to talk about cases and power supplies and with a case that
you're going our cases that you're going to be using in putting a computer
together you need to know the different types of cases for the different types
of computers now with cases on a computer you're going to have different
types you're going to have tower cases you're going to horizontal cases that
stand up you're going to have full-size Tower cases you're going to have compact
hours you're going to have all in one type of cases that come with computer so
you need to be familiar with all those for this material and specifically for
the A+ course or the A+ certification you need to know which types of cases
are out there so that they run from the different different sizes from anywhere
from the tower so you just need to know all the different ones are out there
because then when you're learning the types of motherboards you need to know
the types of motherboards and what types of cases that they will go into you also
when you're wanting to choose a case you want to make sure that you have one that
provides good air flow because any overheating on a computer is not a good
thing and you want to make sure that the sizes you're choosing is going to fit in
the environment that you need so if you are choosing for a company and they've
got a death sized area that's really small and they need a small form-factor
you need to get a small slimline case to be able to put that type of computer in
there the next thing we're going to look at is power supplies and on power
supplies what you have to focus on on a power supplies is what the power supply
does is it provides power to all the computer components and your
and it needs to be chosen based on current and future needs you need to
make sure that if you're going to add maybe another hard drive maybe you're
going to add a second cd-rom or you're going to add a cd-rom barner into your
computer you need to make sure that the power supply that you're choosing is
going to provide enough power for the current needs and the future needs and
you also need to know that the power supply delivers different voltage levels
to meet different internal component needs on there and another thing I'm
going to say here all in disc is up on these power supplies you need to make
sure if you see where I'm drawing right down there there's usually a switch on
the power supply that changes that setting on there and that setting on the
back is that typically on most power supplies is going to be a setting
between 115 or 230 and you need to make sure that you have that switched to B to
match the voltage that is coming into your house or match the power supply in
your house or your business or whatever wherever you're located now when we are
looking at calculating power supply wattage that is the power equal tidge
times amps and that's how you can calculate this there's a lot of other
videos out there on how to calculate voltage and amps and your power so I'm
not going to cover in this video here this is just an overview of that but you
do need to understand this concept of the voltage and amps and how to
calculate that so when you take the netacad course there's going to be more
material in there this is just an overview in the PowerPoint here okay so
we're talking about motherboards we're talking about the internal PC components
now we've talked about the power supply but when we talk about motherboards the
motherboard is what holds everything together and that's why it's called the
motherboard kind of like the mothership if you're talking about an alien
spaceship you're talking about the mothership or the motherboard it's where
everything plugs in your CPU your graphics card your power supply is going
to power everything your your RAM your random access memory is going to plug
into that and so all of your components tie in through the motherboard and when
you are selecting a motherboard you need to select it based upon your needs of
what you're going to have what type of graphics processor cards are going to
have what type of RAM you're going to have what type of
asesor you're going to have what type of case you're going to put it in so if
you're going to going to be putting it into a slimline case you need to make
sure that you select a motherboard that's going to go for that and for the
A+ certification you need to know the different types of motherboards I'm not
going to cover it in this video here but you do need to look up and review and
probably memorize the different types of motherboards that go into the case in
there the next component is the CPU or central processing unit that's really
talked about being the brain that's where most of the process and I will say
all the processing that's where most of the processing is done for your computer
because sometimes depending upon your components you can have some processing
done in other areas of your computer but that's where the main bulk of your
operating system is going to send the processing or don't do with calculation
through that CPU and your CPU is going to be chosen depending upon what type of
motherboard so if you are going to choose an Intel or an AMD you have to
get them other board that fits that particular CPU so you can pretty much
say that the CPU and the motherboard are going to be tied together into the type
that you're going to choose now the next component here is the cooling system you
want to really focus on making sure that you get the correct cooling system for
your motherboard and for your case because the cooling system is what keeps
the temperature down and if you if you're as you're learning about
computers you're going to find out that heat is an enemy of your components of
any electronic components heat is not a good thing so the hotter something gets
with electronic components the more risk you're going to do or the more risk you
have of damaging something in there so you want to make sure that you have good
fans good cooling components in there you want to make sure that you select a
case I know I've seen people where they cut extra holes in the sides of their
case they put extra fans in you just need to make sure that the proper flow
is maintained through your computer when you're dealing with servers most server
manufacturers in fact I'll say all of our manufacturers they designed their
cases on their servers to make sure that the proper airflow was going through so
you want to make sure that when you're adding extra cables in when you're
putting extra components in and you can see in this picture right here where we
have a graphics card here are an extra card that we have and it's going to fan
to it but as we put more components in those are going to generate more heat
and so in the past I've had bands that set in two slots here and they take air
and suck it out of the case I've put fans on the sides of the computer you
can get into water cooling there water cooling units that you can put into a
system so you might want to check that out as well okay so next let's take a
look at memory both ROM and RAM and those are different ROM is read-only it
is it stores data permanently it stores firmware information in low level
programs it's what it's so that if your computer turns off that information is
still there Ram is what we like to call its volatile memory which means that if
the power goes off your computer everything that's stored in your RAM or
random access memory you lose it it dissipates and it goes away
and so it's temporary storage it aids in the processing so the processor sends
information over to the to the RAM to hold it temporarily or to do some of
that you know to pass it through on there but the RAM is what allows or just
you need to know that Ram is volatile and if you in other words when your
computer's turned off and you've lost information that information was stored
in your RAM at the time and that's why it wasn't saved to either a hard drive
or written to some type of device other components inside your PC you have
adapter cards and expansion slots adapter cards could be anything from
your adding a F you might need to attach scuzzy and we I'm not going to go into
what scuzzy is SCSI and in this video but you can look that up let's say that
you have to attach a scuzzy a some type of scanner system into your computer
where you would put a card in and you could put into the expansion slot here
and it would allow that expansion or that that uh those cables to be able to
connect it on the back so those allow extra devices or extra components to be
added into your motherboard storage devices those are something that you're
going to do what we call permanent storage or long-term storage those are
going to be your hard drives that's where you're offering
systems going to reside that's where your files are going to reside that's
where anything that you want to write to it after you turn your computer off that
you want to keep long term is going to be written to that device
those can be internal or external and you can connect those through USB cables
and you can connect those through other types of you know scuzzy was another
form factor back in the day it still is that that helps you store to buy store
information on a store or puts information on a storage device video
ports you need to know the different types of video ports you need to know
HDMI you need to know of VGA you need to know
digital visual interface the DVI you need to know all those different types
of types of connectors but just at this point you need to know that you have
video ports they can be internal or they can be tied into the motherboard a lot
of motherboards have that have a VGA or have some type of video component to it
or you can add an extra card and that allows you to have a video that comes in
and then you've got your general ports most computers today and this is 2017
when I'm recording this video most computers today are not going to have
the old ps2 keyboard mouse connectors but you may work on some and you still
need to know those ports for the CompTIA A+ certification exam and you just need
to know that your general ports like your USB ports and your other types of
ports allow connectivity between your motherboard and other types of devices
such as printers external storage video cameras and the such now the last few
components we're going to talk about here is video related in video ports and
related cables those are there's different standards govern different
types of traffic whether it's Anna laws or whether it's digital and a couple of
standards that it talks about here is hdmi and displayport those are examples
of video ports that require a specific cable to operate and you do need to know
those different types of cables you do need to know hdmi displayport DV is
different types of DVI you need to know those for the exam there are other ports
and related cables through that you have to have motherboards have a number of
other ports used for connectivity USB is a common example where you would have a
USB plug in on the front of your and then there's a cable that goes from
that USB to the back of that USB port to your motherboard which plugs directly in
and then you have adapters and converters those can be a motherboard
does not have a proper port to connect to a device you would add a an adapter
in let's say that you have VGA coming out of the back of your computer or
let's just say that you have DVI coming out of the back of your computer and
your computer monitors VGA so you can have these converter devices that will
convert it from digital over to analog in this case DVI over to RGB or excuse
me VGA adapters usually do not usually process the signal they simply just
redirect to another pin they're just crossing it over and converters are more
likely to process the information to transform the signal converting that
from a digital to an analog but an adapter just adapts it a converted does
do some type of conversion on Messick okay so let's move over to selecting
computer components for our devices for our computers when we're selecting
computer components there's some things that you need to make sure that you
focus on you need to select a motherboard CPU case and memory at the
same time because that memory that CPU and that the heatsink in that case are
all going to go together you're going to make sure that you have a motherboard
that's going to fit the right case you're going to make sure that that
memory fits that motherboard you're going to make sure that that CPU that
you're selecting does fit the correct socket on the motherboard you're buying
and then usually you're buying your CPU and your heatsink at the same time those
usually come as a package deal I would recommend always you know when you're
purchasing a CPU to make sure that you get the proper heatsink that goes with
that one otherwise and don't buy third party you know buy the ones that go
directly with it on that the case um let's see here so a motherboard should
support all a customer required applications and still put the proper
size the case should be toast of motherboard make sure that you have the
proper power supply the CPU needs to be compatible the memory needs to be
compatible and the amount of memory will depend on the application requested by
the customer so if you need to make sure that if you're going to be doing
virtualization where you need a lot of memory
let's just say you need you know 32 gig of ram or more you need to make sure
that that motherboard is going to allow you to be able to plug that amount of
RAM in and it's everything's going to be able to handle that so you just need to
make sure that you were looking at that for your your for your needs now the
last thing I want to talk about here is configuration for specialized computer
systems you are going to come across systems where you have to specialize in
what you're building in this case you might have a what they call a thick or a
thin client for example a thin client might be a very small device where
you're going to do most of your processing on the server side where
you're in a you're in an environment where you can't have an example of my
work history I was in an environment where computers had to be out on the
work floor that we were a paint processing company and there was lots of
paint paint dust that was in that environment and we could not have a
regular computer out on the manufacturing floor so what we had to do
is put thin clients in because they did not have any type of air moving through
that component and then we had to put it inside of an area where we could cool it
and it would not suck in all that all those paint fumes that are all those all
that paint dust so you need to make sure that you take that into account
you might have a CAD system computer-aided design system you might
you need to make sure that you have plenty of RAM on that and processing
power usually what you're going to do in these cases is you're going to look at
the software requirements and I'll just say in an example let's just say the
software tells you that it's going to need four gig of ram to operate on a
minimum standard so you know that you're going to need to have enough RAM for
your operating system and then enough RAM for your for your application and
then extra because if that's a minimum requirement of four gig you know you're
going to want more than that so that will run smoothly and then last if
you're doing audio and video editing you want to not last but you want to make
sure that if you're doing audio and video editing that you have the right
RAM or a right amount of RAM or more that you have right type fast disk
because if you're doing a lot of processing and having to write to a
drive you're going to drop frames and you're going to you're going to drop
information if you don't have it writing fast enough to your computer
so you want to make sure that you have enough types of hard drive so you might
put an SSD drive instead of regular drives if you're
doing virtualization you make sure that you have enough RAM if you're doing a
gaming PC that you need to make sure that you have the proper cooling but you
have the right CPU I know in my gaming a gaming computer I put my processing on
SSD drives and then I have a storage device stretch up which is a still a
spin drive on there and then I upgrade it on my laptop where I just have double
SSD drives in there so that I can I don't really have any spinning going on
in there whatsoever so everything writes faster if you're doing a home theater PC
you need to make sure that you have the right output so if you're going to do
HDMI out or you're going to do another type of video out video signals you need
to make sure that you are getting those right cards or those right components
that will be able to connect in there okay so this was chapter one for the IT
essentials we covered a lot of different topics in this video if you take you
should be taking the medic add IT essentials course and if you take that
there's going to be a lot more information in the material presented in
that course but we've talked about first we've talked about computer components
we talked about cases we talked about processors and rams and hard drives we
talked about specialized computer hardware components so that if you need
to make sure that you're selecting the right components in the right amount of
RAM the right CPU for the job that's going to be required for that okay so
that's the end of this video here I should have some other videos coming up
here on on your right side that will show you to the chapter two and beyond
and also check out my other videos subscribe to my channel and I hope you
have a great day