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WIRELESS COMPUTING

WIRELESS COMPUTINGCHAPTER 12DISCOVER WIRELESS COMPUTINGOBJECTIVEOUTCOMETO UNDERSTAND THE ADVANTAGES AND DISADVANTAGES OF WIRELESS COMPUTINGWILL BE ABLE TO LIST OUT THE FEATURES OF WIRELESS COMPUTING1) What are the advantages of Wireless Computing?Lack of cables, lines & cordsSo looks neaterMakes devices easier to installMore flexible

2) Mention the disadvantages of Wireless Computing.Consumes a great deal of powerHave shorter battery livesInterruptions from nearby devices can interrupt the communicationThus inconsistentLess secure3) Define Radio Signals & Radio Transceiver. Wireless devices transmit data and communicate with other devices using radio signals that are beamed from one device to another.

A radio transceiver is a device that can act as both a transmitter and a receiver of radio signals. It is a two-way communication.WIRELESS PERIPHERALSTO INPUT DATA- Wireless keyboard, mouse or joystick

TO OUTPUT DATA Wireless Monitor or PrinterRECAP- QUIZDefine the term : Be ConciseWhat do you mean by the term : Do Not Send Flames?What are the 3 parts of an E-mail Address?DISCOVER WIRELESS COMPUTING (CONTD)OBJECTIVEOUTCOMETO STUDY ABOUT WIRELESS NETWORKS AND OTHER TECHNOLOGIES.WILL BE ABLE TO UNDERSTAND THE FEATURES OF WIRELESS COMPUTING.WIRELESS NETWORKS

AD HOCINFRASTRUCTURE1) WHAT IS WIRELESS NETWORK? WHAT ARE ITS TYPES?A wireless network is a collection of two or more computers that communicate with each other using radio signals. Its of 2 types: Ad Hoc network & Infrastructure network.WIRELESS INTERNETWireless access points have ports to which you can connect a high speed modem. So wireless computers can access internet through access points.

2) WHAT IS WIRELESS HOTSPOT?It is a location that allows wireless computers to use the locations Internet connection. Eg Hotels, airports, office.

WIRELESS TECHNOLOGIESWI-FI( Wireless Fidelity)- [802.11, 802.11a, 802.11b, 802.11g, 802.11n]BluetoothCellularMicrowaveInfraredWIRELESS RANGEWireless peripherals like keyboard have range only a few feet.Wi-Fi has range from 75feet-150feet

WIRELESS SPEEDMeasured in Mega Bits Per Second (Mbps)Range is like: 11Mbps(802.11b) to54Mbps(802.11g) to248Mbps(802.11n)REVISION QSTNSMention the advantages & disadvantages of Wireless Computing.Define Radio Signals & Radio Transceiver.What is Wireless Internet?Explain about the range and speed of Wireless Devices.WIRELESS COMPUTING DEVICESOBJECTIVEOUTCOMETo familiarize the wireless computing devices.Will study about the wireless peripherals, handhelds & other devices.1) What is meant by Wireless Access Point?It is a device that receives and transmits signals from wireless computer to form a wireless network.This extends internet access to all the computers on the network.

WIRELESS INPUTEg. Keyboard & mouse.Attaching a USB transceiver to our computer, they can operate within 20-30 feet of the transceiver.

WIRELESS NETWORK ADAPTERSUSBPC Card

Network Interface Card (NIC) Bluetooth Adapter

OTHER WIRELESS PERIPHERALSWireless Print ServerPrintersMonitorsWebcamsGame pads

WIRELESS HANDHELDS

This have Wi-Fi or Bluetooth wireless capabilities built in. So can check E-mails & surf web in the hotspots available.2) What is a Wireless Range Extender?If our Wireless Access Point is not reaching certain areas of our home or office, then we can use a Range Extender to boost the signals.This can extend more than double the normal wireless range.