What is Wi-Fi | History

History of Wi-Fi

Wi-Fi is short form of Wireless Fidelity (Wi-Fi). Wireless Fidelity is a Wireless Networking Technology which allows to mobiles, ipads,Computers,Game Controllers,Phones and many other devices to communicate on a wireless signal. Wireless Fidelity Signal is a high frequency radio signal. Wifi invented in 1991 by NCR Corporation AT&T in Nieuwegein, The first wireless brand comes in market WaveLAN with 1Mbps & 2Mbps speed. WLAN stands for Wireless Local Area Network. Inventor of Wifi was Vic Hayes and Vic Hayes has been know as a "Father of Wi-Fi". Vic Hayes and his team designed IEEE (Institute of Electrical and Electronics Engineers) , 802.11b, 802.11a and 802.11g. The starting and the first version of 802.11 is released in 1997 and generate upto 2Mbits speeds but in future with the progress of science in 1999 they are introduced 802.11b with high 11Mbits speed.

The Wi-Fi setup contain one or more than one Access Point and more than one Clients. Access Points Broadcasts (Service Set Identifier) its SSID through Packets which are called Beacons. They are continuesly broadcasts every 100ms. Wi-fi is a major source to transfer data from on device to another device with radio signals.

What is Software | Hardware

What is software and Hardware

Software is a set of instructions that tells a computer what to do. A computer works according to the instructions written in the software.

The physical parts of a computer are called Hardware . The  user can see and touch hardware. Keyboard and Mouse are examples of hardware.

Relationship With Software and Hardware

Siftware is a set of instructions that tells the computer hardware what to do. The Hardware cannot perform any task without Software. The software cannot be executed without Hardware. A computer becomes usefull only when hardware and software are combined.

What is Different Between Software and Hardware?

	Software	Hardware
1	Software is a set of instructions that tells a computer exactly what to do.	Hardware is physical parts of computer that cause processing of data.
2	Software cannot be executed without hardware.	Hardware cannot perform any task without software.
3	Software cannot be touched.	Hardware can be seen and touched.
4	Software is debugged in case of problem.	Hardware is repaired in case of problem.
5	Software is reinstalled if the problem is not solved.	Hardware is replaced if the problem is not solved.

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