Gadgets With Bluetooth and Wifi

Bluetooth is a proprietary open wireless technology standard for exchanging data over short distances (using short-wavelength radio transmissions in theISM 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 was originally conceived as a wireless alternative to RS-232 data cables. It can connect several devices, overcoming problems of synchronization

Bluetooth Gadgets

 

Bluetooth logo  for  wireless page

 

 

 

There are lots of different ways that electronic devices can connect to one another. For example:

  • Component cables
  • Electrical wires
  • Ethernet cables
  • ­WiFi
  • Infrared signals

Bluetooth is essentially a networking standard that works at two levels:

  • It provides agreement at the physical level — Bluetooth is a radio-frequency standard.
  • It provides agreement at the protocol level, where products have to agree on when bits are sent, how many will be sent at a time
  • The big plusses of Bluetooth are that it is wireless, inexpensive and automatic

WIFI TECHNOLOGY AND GADGETS

Wi-Fi (play /ˈwf/, also spelled Wifi or WiFi) is a popular technology that allows an electronic device to exchange data wirelessly (using radio waves) over a computer network, including high-speed Internet connections. The Wi-Fi Alliance defines Wi-Fi as any “wireless local area network (WLAN) products that are based on the Institute of Electrical and Electronics Engineers’ (IEEE) 802.11 standards”

Wi-Fi Logo for blue tooth

How Wi-Fi Works

Wi-Fi works with no physical wired connection between sender and receiver by using radio frequency (RF) technology

A large number of patents by many companies are used in 802.11 standard.[6] In 1992 and 1996, Australian organisation CSIRO obtained patents for a method later used in Wi-Fi to “unsmear” the signal.[7] In April 2009, 14 tech companies agreed to pay CSIRO $250 million for infringements on CSIRO patents.[8] This led to WiFi being attributed as an Australian invention

Wi-Fi  is supported by many applications and devices including video game consoles, home networks, PDAs, mobile phones, major operating systems, and other types of consumer electronics.

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