Know About Wifi

Know About Wifi

 Currently In modern times, almost all public places have Wi-Fi access.  We are also familiar with the term or word Wi-Fi.  However, what exactly is wi-fi?  Here is the explanation!

 Understanding Wi-Fi

 

 Illustration of Sharing Data with Wi-Fi

 In general, the notion of Wi-Fi is a technology for exchanging data using radio waves (wirelessly) by utilizing various electronic equipment.  It takes electronic equipment such as a computer, smartphone, tablet, or even a video game console to connect to a computer network, including the internet, via Wi-Fi.

 The electronic device must be in a wireless network access point (hotspot) to be able to connect to Wi-Fi.  In a Wi-Fi network, usually the access point has a range of up to 20 meters indoors, and in others, it is more accessible for Wi-Fi outdoors.

 Wi-Fi itself actually stands for Wireless Fidelity.  In general, to be connected to an electronic device, Wi-Fi uses radio wave frequencies in the 2.4GHz to 5GHz range.

 The growing era of changing the internet from previously only a tertiary need, now seems to have become a primary need.

 That's why there are quite a lot of business people who take advantage of the Wi-Fi so that their customers can enjoy longer time at their restaurant / cafe.  Even though Wi-Fi doesn't just appear, there is a history of Wi-Fi development which can be briefly described in the following points:

 1997: Formed a wireless network called 802.11 by IEEE (Institute of Electrical and Electronics Engineers)

 1999: Wireless B appears with a data transfer rate of 11 Mbps.  However, it still has a weakness, namely the operating frequency which is in the 2.4 GHz number, which is also widely used by the frequency of household appliances such as microwave ovens, so the signal is easily interrupted.

 2003: Wireless G appears with a maximum data transfer rate of 54 Mbps.  Still operating in the 2.4GHz frequency.

 2009: Wireless N appears, supporting data transfer rates of up to 300 Mbps (2 antennas) or 450 Mbps (3 antennas).  The range is wider than the Wireless G signal.

 2014: Wireless AC appears which has a speed of 500Mb / s - 1 Gb / s.  Operates at the 5GHz frequency.

 Function Of Wi-Fi

 

 Wi-Fi Network Illustration

 After understanding the meaning of Wi-Fi, it turns out that there are still more Wi-Fi functions that you may not be aware of, such as some of the functions below, for example:

 1. Connect the Device to the Network

 Unlike the LAN cable network which has limited users, Wi-Fi can be used on multiple computers without increasing the number of cables.  That way, Wi-Fi makes it easier for multiple users to connect to the network at the same time.

 2. Sharing Data Between Devices

 Suppose you have two electronic devices, and then want to move data on one of them to another.  Wi-Fi can be used for this, so that data cables are no longer needed and make work more practical and efficient.

 3. Modem From Smartphone

 Indeed, with Wi-Fi, a smartphone can connect to the internet so that users no longer need to use their paid data plan.  But not only that, if your smartphone supports wireless devices, then you can make the smartphone a modem.  This is especially useful if you are traveling to a place where Wi-Fi is not available.

 If your data plan is quite a lot, then when you want to access the internet via a laptop, for example, you can use your smartphone as a modem that uses a Wi-Fi signal to connect to a laptop.

 4. Faster Internet Speed

 This of course can be understood by smartphone users.  Unlike when accessing the internet via a cellular network, which is sometimes fast, sometimes slow depending on the presence of the signal, usually the speed of internet access using Wi-Fi is more guaranteed.

 One indication is that you can stream videos without stopping, faster document downloads, access that doesn't require loading.

 How Wi-Fi Works

 

 Illustration of How Wi-Fi Works

 Simply put, Wi-Fi works by using radio waves.  Various data requested or sent by users streaked through the air using radio waves.  In order to translate data or documents sent via radio waves, a computer must have a wireless adapter so that it is connected to Wi-Fi.

 Radio waves in the form of this signal are then sent to the router which functions as a decoder (code translator).  After being translated, the data is sent to the internet using an ethernet connection.

 Wi-Fi networks work both ways, every data received via the internet also passes through the router at the same time to be coded by it on each data packet, then sent back in the form of a radio signal received by the wireless computer adapter.