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What is a computer?
#1
This thread is full of random information about a computer.
What is a computer?
A computer is an electronic communication system which processes data and is powered by electricity (Duhh) and has many different components inside of the PC.
What does a computer consist of?
A computer consists of these electrical devices -
  • Motherboard

  • R.A.M (Random Access Memory)

  • CPU (Central Processing Unit)

  • GPU (Graphics Processing Unit)

  • PSU (Power Supply Unit)

  • HDD (Hard Disk Drive) / SSD (Solid State Drive)
    These are all the basic hardware components

So, let's go through them all and explain their function and role within a computer.

Computer hardware components

Motherboard - This is the 'Heart' of the computer, this is where everything is plugged into. the motherboard also has a BIOS (Basic Input Output System) and it is the first thing that loads up when your computer is turned on, think of it this way, when we wake up we yawn and we start to hear people and noises and we open our eyes we see things, so all of our senses start up when we wake up, same is for a computer but it recognises all of the hardware!

R.A.M (Random Access Memory) - (think of the ram as the lungs since it temporarily holds oxygen and exchanges oxygen with C02, I think xD) This is the "storage" unit of the computer, but it is only a temporary storage, while the CPU is working with millions of calculations per second, the hard disk drive (HDD) Is also having trouble keeping up, so the CPU gives your RAM information / storage to keep hold of while the HDD catches up, and when it has done so, your RAM gives it to the HDD. So think of it like a temporary library with books full of information coming in and out. also, (for example) if you're on your web browser, all of its info gets sent to the RAM and gets ran on there until you close it, then it gets removed from the ram and back into the HDD!

CPU (Central Processing Unit) - The CPU, is known as the 'brain' of the computer and it can do millions of calculations per second. It also translates any human input (keyboard key press, mouse click, voice input, etc) Into binary so the computer can understand it. so for example, If a person who speak a completely different language started speaking to you and you could not understand, put the 'translator' person in the middle so he could then translate that language into English, so we can successfully understand. You can also get many different types of processors, I will talk about this later.

GPU (Graphics Processing Unit) - The GPU is a dedicated graphics card which plugs into your motherboard, you can get various different sizes for a GPU, from 100mb to 4GB, with an obvious price difference! A GPU is an optional hardware component to have, well it only is if your CPU has an on-board graphics interface...but with on-board graphics, you cannot play resource intensive games, that's why sometimes you do need a GPU. 

PSU (Power Supply Unit) - The power supply unit is one god-damn important component, it changes the current 230V (Mains electricity for the UK) to a safe(ish) level of electricity for you computer, so it is basically like a transformer. the PSU also has loads of cables coming out of it, from 4 pin molex cables, to PCE, 20 / 40 pin motherboard connector and rarely a 3 pin connector. you need to plug the 20 / 40 pin connector into the motherboard to power the baby up, sometimes GPU cards don't need any power, but some require either 1 or 2 PCE connections.

HDD / SSD - Hard Disk Drives (HDD) are storage devices used in a computer, we need these in order to store data, such as our OS, documents, music, pictures,video's etc, and you get the point, haha.
HDD's do rather range in disk space, but they are quite cheap now due to the newly found SSD's.
SSD's are Solid State Drives and can write / move data at an average 500mb/s (very fast!) While HDD's are around 20mb/s (shit as fuck, lol)
But SSd's are way more expensive than HDD's, for around 128GB they are £70 while a 1.5tb HDD is £70.

These where all of your basic components, but now you know them, let's move on!


[Image: vvxWkwv.jpg]
Okay, now it's time to learn your Input, Process, Storage and Output devices! Yaay!

that's the basic flow chart, now time to list some for ourselves.

Input Devices -
Mouse (USB or PS/2 powered or wireless)
Keyboard (USB or PS/2 powered or wireless)
USB Devices (USB Powered)
External HDD / SSD (USB or plug socket and sometimes both)
Disk Drive / Blue ray drive (Powered by the PSU (Power Supply Unit) 
CD (Read by the disk drive)
Microphone (3.5mm AUX cable)
Webcam (USB powered)
Image Scanner (Plug socket powered)

Processors - 
Intel (brand of processor)
AMD (brand of processor)
Single Core - 1 core in the CPU
Dual Core - 2 Cores in the CPU
Quad Core - 4 cores in the CPU
6 Cores - 6 cores in the CPU
8 Cores - 8 Cores in the CPU
The more cores there are in a processor, the faster and more efficiently the CPU will perform tasks, and also the hotter the CPU will get.
Because the CPU performs hundreds and thousands of tasks per second, it will obviously emit heat, so to prevent the CPU from overheating, we must use a Heat sink fan in order to keep it at a low and reasonable temperature, if a standard fan is not good enough, you must use water cooling, but that has it’s drawbacks.

Gigahertz - This is what the CPU (Central Processing Unit) speed is measured in, an example of a single core processor could have 2.4Ghz processing speed, and it's total processing speed is 2.4GHz, but if there was a Quad Core 3.4GHz processor, we do 3.4GHz x 4 (Because that's the amount of cores) So that would be 13.6GHz processing power in total. 
Cache - This is the "Quick Memory" of the CPU, if there are some programs you use regularly on a day to day basis and you add it to the CPU cache (sometimes it's done automatically), they will launch faster than usual, some CPU's have a cache up to 36mb such as the Intel core i7.

Removable Data storage –
CD / Disk drive
Floppy Disk (rarely used now because it’s big and hold a small amount of memory, for example 16mb)
Memory Card (These are really small and can hold quite alot of data, such as 64gb)
USB Flash Drives (These can hold up to 128gb worth of data, this shows how much technology has evolved)

Data ports - 
Data ports are what we can transfer different sorts of data through, some examples are below.
USB (Stands for Universal Serial Bus) 
Ethernet cable (transfers internet data from the router to your PC)
FireWire (Used in-between 2 or more dedicated graphics cards in a single PC)

Data Storage –
Data storage is what we use to store all of our information and data on our computer.
HDD – Hard Disk Drive (A standard data processor / storage device used in all computers, this is what we use to store all of our documents, pictures, music etc)
SSD – Solid State Drive (A new piece of technology which is much faster than a standard HDD, it can move up to 500mb/s unlike the standard HDD which is around 16mb/s)
R.A.M (Random Access Memory) This is what we use to store data temporarily, and not permanently, Ram is what gives us access to search things and go into our folders, the more ram we have, the more tasks we can perform at once.

Output devices – 
PC Monitor (Displays everything the computer says on screen)
Speakers (Plays sound through some speakers, Some PC’s have a dedicated place for a sound card)
Printer (You can print documents and files which you have written)

So yes, thank you for viewing my thread.
Cheers!
#2
Thanks for the post, SB. :)
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#3
(07-13-2016, 05:10 PM)Baredee Wrote: Thanks for the post, SB. :)
No Problem, hope it was somewhat helpful.
This is more targeted for the newbies, :)
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#4
O shyate this post is pretty good! Keep it up love this.
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#5
(07-15-2016, 11:34 AM)Coddr Wrote: O shyate this post is pretty good! Keep it up love this.
Cheers dude!
I know that a few years back that I would've appreciated this - hope it helps some people out :)
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#6
Good HQ tutorial for newbies that need to be enlightened! Thumbs up brah!
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#7
(07-15-2016, 06:30 PM)dragonhunt3r Wrote: Good HQ tutorial for newbies that need to be enlightened! Thumbs up brah!
Thanks dude!
I hope it explains it a bit easier than the Internet would!:)
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#8
Great tutorial and explanation. Very much appreciated. Glad to see a lot of HQ threads again.
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#9
What can I say other than an exceptional job on It's documentation and elaboration.

As per usual, great work StrandedB.
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#10
(07-31-2016, 11:17 AM)Bish0pQ Wrote: Great tutorial and explanation. Very much appreciated. Glad to see a lot of HQ threads again.
Thanks dude! No worries, I know that it is a bit simple but yet you start from the bottom and can only go up!
(07-31-2016, 02:53 PM)mothered Wrote: What can I say other than an exceptional job on It's documentation and elaboration.

As per usual, great work StrandedB.

Thanks mothered! Really appreciate your kind feedback :)
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