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Wired and wireless communications - Coggle Diagram
Wired and wireless communications
Wired communications
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Ethernet
CONNECTION TYPE AND USE
HDMI-Digital video connections
S/PDIF-Digital audio connections
Minijack-Personal headphones
USB -Storage transfer
Ethernet- Networking
Ethernet allows a user to connect to wired networks. As Ethernet technology develops, the speed at which data can be transferred between devices is improved. Ethernet cables can be 100 metres long before the signals they carry start to lose quality.
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WI-FI
Wi-Fi is used in home and office networks. Some companies provide Wi-Fi access in towns and cities. Wi-Fi is a wireless technology used to connect devices to a network. That network can itself then be connected to the internet, so that devices connected to the Wi-Fi network can connect to the internet.
Wi-Fi uses the IEEE 802.11 specification of standards for wireless communication. The specification is revised regularly to take account of improvements in technology. Each revision to the specification is given a different letter or pair of letters at the end. The first version was IEEE 802.11a.
Each revision of the technology improves the speed at which data can be transferred and increases the distance over which devices can connect.
Wireless communication
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BLUETOOTH
Bluetooth is a type of wireless connectivity that lets devices connect over short distances. It cannot carry as much data as Wi-Fi. Bluetooth devices need to be paired with each other before they can communicate.
Bluetooth can be used to transfer small files between devices. It is used to connect devices such as smartphones and laptops to peripherals such as portable speakers, headphones, earphones, keyboards and mice.
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3G AND 4G
3G and 4G are sometines refered to as mobile bres shard, They Bre va
to prodi de internet access to mobile devices she astand phones an eas to pies when a Wi-Fi signal is not available. The & broadsar generation) meaning that 4G is the fourth generation of mobile improved technology, Future generations of the technology are planned to improve the speed are availability of the signal.
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INFRA-RED (IR)
Infra-red signals cannot carry much data and only have a short range.
Transmitters must have a clear line of sight to receivers, because this allong the signal to travel in a straight line between them without being blocked by solid objects like walls. The signal is also affected by sunlight. It is often used in remote-control devices such as television remote controls.
NEAR-FIELD COMMUNICATION (NFC)
NFC uses close proximity RFID (Radio Frequency Identification) chips. NFC; used in smartphones, payment cards and travel cards.
