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- 1what is WiFi?Wireless Fidelity (Wi-Fi) is used to connect computers or other hardware together that come within range of each other. Each device requires a wireless adapter. Other computers can join the network provided they are within range. A hotspot is required – a site that offers Internet access by using a router connected to an ISP. The user opts to connect wirelessly and inputs a password to connect to the ISP. This hotspot or AP (access point) can also act as a connector between a wired network and a non-wired network.
- 2what is bluetoothBluetooth is another wireless technology that allows devices such as phones, etc. to communicate over short distances. Bluetooth may already be installed in a device and thus a driver is not required. The idea is to pair one device to another using a passcode which is exchanged between the two devices. The first device asks for the password the user invents and then the second device asks for it. When the password is given correctly the two devices can communicate. Bluetooth is very popular for sending photos to your phone, sending voice from a headset to a mobile phone or backing up PDA data to a mobile phone.
- 3what is infrared?Connecting peripherals using infrared requires infrared adapters. This is usually an external device connected to a PC computer system and an internal device in, for example, a mobile phone. Although it has the advantage of not needing cables, the two devices trying to connect must be in direct line of sight. Businesses usually use infrared for computer mice and printers. Infrared is also used for night vision and hyperspectral imaging such as that used in security systems.
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- Fichas sobre Sin título, creado por sam154 el 13/03/2015.
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