Wireless Connections

Different Wireless Connections and descriptions about them

Description

Bluetooth is a Proprietary open wireless technology standard for exchanging data over short distances (using short-wavelength radio transmissions in the ISM band from 2400–2480 MHz) from fixed and mobile devices, creating Personal area Networks (PANs) with high levels of security. Created by telecoms vendor Ericsson in 1994. It can connect several devices, overcoming problems of synchronization.

What is it used for?

Bluetooth is commonly used in mobile phones to transfer data from phone to phone, or connect a wireless peripherals and other wireless add on's to different electrical devices that are compatible.

Advantages And Disadvantages

Advantages


  • Quick, easy to use depending on the device.
  • Free to use, if your device has the hardware to use it.
  • can be very Convenient to the user.

Disadvantages


  • Distance requirement as you cant connect to someone who is a certain distance away.
  • Vulnerability to hackers; can be very vulnerable to cyber attacks.

Description

Wi-Fi (short for "wireless fidelity") is the popular term for a high-frequency wireless local area network (WLAN). The Wi-Fi technology is rapidly gaining acceptance in many companies as an alternative to a wired LAN. It can also be installed for a home network. Wi-Fi is specified in the 802.11b specification from the Institute of Electrical and Electronics Engineers (IEEE) and is part of a series of wireless specifications together with 802.11, 802.11a, and 802.11g

What is it used for?

WiFi is commonly used in homes, work place and other accessible places, its commonly used to connect to the internet as it is a very fast wireless connection, but it can also be used to connect two devices if fast wireless connection is needed.

Advantages and Disadvantages

Advantages

  • Fast
  • wireless makes it more modern and help people on the go if a WiFi router near them
  • just use the laptop and surf the net or send emails without hassle of a cable or Speed issues (if you have a decent download speed also take into consideration other variables)


Disadvantage

  • Has problems with privacy and isn't that secure.
  • Also a debate among scientists that it could be damaging for human and their brains in long-term periods. But this has not been proven.

Description

It is used as optical wireless communication medium. This technology is found in a variety of remote control devices used in home, for example TV remote.

There are two main types of infrared applications viz. diffused and directed beam infrared. Data rate of diffused infrared is about 1 to 4 Mbps and distance coverage is about 15 to 60 meters. Data rate of directed beam infrared is about 1 to 10 Mbps and distance coverage is about 25 meters. Infrared occupies about 1 to 400 THz frequency range.

What is it used for?

Other than remote control for TV, VCR infrared is used for number of applications such as computer devices (mouse, keyboard, headphone etc.), car lock, home automation (door, windows, lights, curtains etc.), toys and more.

Advantages and Disadvantages

Advantages


  • Many things are controlled by infrared.
  • sensors are invisible to the naked eye and are very reliable.


Disadvantages


  • Most infrared sensors must be lined up or they will not work