Since the development of this system it has continued to grow especially since 2010. Wireless networks are now also used in mobile phones, they have become part of the everyday network, this enables to quickly and easily communicate via the internet. Another example is that the Inter-continental network systems use radio satellites to communicate across the world. The police, firemen. Ambulances etc use such networks communicate effectively as and transmit crucial information within secondes. Individuals and businesses use wireless networks as well, often to send and share data, such as thoughts, messages, documents, videos etc rapidly, whether it be in a small office building, to a friend or across the world.

It has become widely spread, and most televison and computer related devices use wireless networks now to communicate. Some big Japanese car industries are actually looking into getting cars to communicate with each user through such networks. There objectiv is to create a car which would be like a friend and help you out.

Wifi

Wi-Fi is actual a trademark but is term commonly used. Devices such as a personal computer, video game console, smartphone, and digital audio player can be wifi enabled, which means they can connect to the Internet when they are in range of a wireless network internet connection. Due to it’s great practicallity there are now many hot spots which are free access points offered in public areas, often in hotels, caffees, bars etc. The area is generally limited to the size of a few rooms but may also be expanded with bigger and more emitters to cover many square kilometers, this is achievedwith a big number of over laping wireless connections.

If you have a wifi connection at home you should have it protected with an encryption code. Otherwise all youre neighbours will be able to use it as well, and that will slow the connection down and you might have to pay more. They could also do illegal activities which then will appear to have been done by you.

Now why would you want to have two monitors ? Well, first of all you desktop space will be doubled. Therefore you can have more icons on your desktop without being over flooded. Secondly it is great for multitasking. You can open two seperate programs at once an work on both at the same time. You open each software on a different monitor that way you can switch easily from on to an other. This is great for example if you are writing a document. You can look up information on the internet on one monitor, then leave the page open, and use the other monitor to write your resume or text. This avoids having to switch between the two, which you would have to do if you only had one screen.

However the desktop tool bar cannot be extended to the additional screen. It will always stay fixed to main monitor. This is a windows setting and you cannot change it, unless you buy an additional microsoftware. But this realy isn’t necessary. So basically using two monitors will help you work better, and view more at once. If you are using a laptop, it enables you to have a bigger screen as main monitor, since the laptop screens are often quite small.

In the case that your computer has become really slow there are several possibilitys and options. It might be an old computer which you have had for over 5 years for example. It could also be that your harddrives are too full in such case you should uninstall unneeded programs. It could also be caused by one or several unwanted viruses, which works in the back ground of your system and therefore slows everything down. You should either delete the virus using an antivirus, or you can restore the harddrive and reinstal your operation system. However you will lose all your data.

There is an other methode which more effectiv but more “geeky” and expensive. It is called water cooling. There are several ways to do this. Either the computer is fitted with a network of pipes and pumps full of cold liquide, this then cools down each component and gets ride of the heat. Watercooling is a method often used by gamers who have overclocked there components and it is very important that they stay cool because they will heat up much faster. The other way is to have each component completly submerged in thermally conductive liquide, this is more effectiv as the covered surface is bigger. But they are more risks, if the component has a default or breaks the liquide coud leak into it and damaging it. The liquide supply would also need to be contantly changed in case of evaporation.

The computer also has one or several hard disk drives, this is the permanent memory of your computer. This is where you operating system is installed and where all your softwares and programs are installed. You will also store all you data and documents on your hard drive.  It is a very fragile component and should done be submitted to shocks. Then there is also a CD-Rom drive, to read and burn CD’s, a Floppy drive, which is a small disk storage, you can also have other drives such as DVD device, to view DVD’s.

Because all the components are mechanical and use electricity they will heat up, and in order for them not to over heat and then burn or stop functioning correctly the computer also has one or several ventilators, to keep the case cool and fresh.

Then there is the components that are visible to you, such as the monitor, the keyboard and the mouse, with which you use to control the computer.