The 4 types
The desktop PC is different than the other computers.They have 4 parts to the PC.the monitor,mouse,keyboard and the tower.The tower is for the storage,and the whole power source.The monitor is the screen.The mouse is for the moving from place to place.the keyboard is for the letters to type things.
Laptops are the more potable version of the desktop.If you are a very busy person these are very portbale.But not as portable as the next item.
The tablet is the second most portable Type of pc,these tablets are so lightweight and they are so small so they can just fit in your bag. The apple I pad starts at around £319
These smartphones are the most lightest and the most portable types