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Thursday, July 9, 2015

what is infrared


 Infrared technology allows computing devices to communicate via short-range wireless signals. With infrared, computers can transfer files and other digital data bidirectionally. The infrared transmission technology used in computers is similar to that used in consumer product remote control units.

Range - Infrared communications span very short distances. Place two infrared devices within a few feet (no more than 5 meters) of each other when networking them. Unlike Wi-Fi and Bluetooth technologies, infrared network signals cannot penetrate walls or other obstructions and work only in the direct "line of sight."

                                                                                                                                               

           wireless-world

                                    1.Bluetooth

                                     2.Wi-Fi (Wireless Fidelity)

                                      3.Infrared

                                       4.Wi-max, WLANS, WPANS, WMANS, WWMANS

                                        5.GSM

                                         6.3g

                                          7.4g

                                           8.GPRS

                                            9.CDMA

                                            10.EVDO

                                             11.UMTS and HSDP