PDAs, Bluetooth & Wireless

PDAs PDAs or handheld computers stand for Personal Digital Assitant. These are portable computers which enable us to communicate and record information. They're used especially by doctors and proffessionals. Advantages:- * They're portable; remote use from places of work. * They're easily carried. Disadvantages:- * It is a bit difficult to enter text. * They're as much expensive as laptops.   These days, no one uses PDAs becuase...

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GPS (Between the Past and the Present)

GPS   First Model:- The first model was develped in 1973. It was created and realized by the US Deparment of Defense. It became fully operational in 1994. Old GPS Model:- The old GPS model's concept was only to locate the user using satellite navigation. They were used by drivers mostly to produce route for their cars or lorries. The main advantage of this model is that it is faster than the a normal road map and the recieve up-to-date...

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Portable Entertainment Devices

Portable Entertainment Devices   1st: Portable DVD Player Advantages:- * They can be used outdoors in remote areas. * They can play music, videos from CDs. * They can be used as radios. * They're entertaining Disadvantages:- * The quality of videos and recording audio is poor. * They are not useful for group viewing | | |   2nd: Portable Media Player Advantages:- * They can be used outdoors. * They can be...

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Mobile Phones

Mobile Phones Mobile Phones are portable communication devices which enable us to communicate with people in distant areas. The main features of modern mobile phones are:- 1) Make personal, business or international phone calls. 2) Send text messages (SMS) 3) Wi-Fi Connection 4) E-mail 5) Bluetooth and other connections 6) Entertainment purposes like: playing games, watching movies, listening to music and viewing photos. 7) Applications...

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