In the past and in the present, and in the future, we're using mostly the computers because their much powerful and helpful. But we also have the know what's inside the computers and how to fix them incase if something it's damaged...
The first things that we need to know are the Computer Accessories.
The Monitor: The display of the computer where we can see them inside the screen.
The Keyboard: The most useful thing to use the computer, specially for electronic talking. Without keyboard, we can't use the computer so much.
It's bigger and it's has keys.
The Mouse: Same as the keyboard, but it's easier to use it in the programs that needs a mouse or you can use them in programs, overall, it's smaller.
It's has three buttons: the left click, middle click and the right click.
USB
Output: From where the device it's being connected to something.
Input: In where it's being connected and being used.
The Tower/Central Tower: The main component that's all the computer has and it's has stocked all its other components.
And now, let's go though the computer components.
Motherboard AKA Mobo: The main computer's component where we can add all those components below.
CPU (Central Processor Unit): The component that can handle every process on and so.
GPU/Video: The component that can handle to image to the monitor everything from the computer.
Its inputs are: VGA, HDMI, DVI etc...
It's formed for different mobos:
AGP and PCI.
Hard Disk: The component where we stock informations, files and everything in.
Its inputs actually are: ATA and IDE.
RAM (Random Access Memory): The main component that's handling the memory of all the processes going on.
It's varies in different DDRs.
CD/DVD Reader/Writer: The important component that we can insert CDs/DVDs, for installing softwares, games, systems etc. In the past, there were Floppies diskettes, which they got abandoned cause of lack of adding much storage.
The Fan/Cooler: The most important part to avoid overheating and such heat problems, that cause to slow down your machine.
That's kinda all about the components.
Questions are welcome. Any correction suggestion is aswell welcome.