1. Portable Communication Devices Hyper linking

2. Satellite Navigation Systems Satellite Navigation Systems Mobile Phones Mobile Phones Portable Media Players Portable Media Players Bluetooth Global Positioning Systems Global Positioning Systems Handheld computers Handheld computers Portable DVD Players Portable DVD Players

3. Back to Input Devices Mobile Phones They work by transmitting electromagnetic radio waves. They have a receiver to transmit/receive data from the nearest mobile tower. Used for making calls and business. Useful in areas where land line is unavailable. It is also a convenient way to send urgent messages AdvantagesDisadvantages Can be used while travellingCost more than landline. Can be used to send photosQuality of photo can be poor Can loose connection if going through a blind spot. Small display Limited batter life

4. Back to Input Devices Portable DVD Players Work just like normal DVD players but have a built in screen. They are used for personal use like in cars for the passengers. AdvantagesDisadvantages Small and compact Screen is of low resolution Play music CD’s Viewing quality can be poor. Screen is small

5. Back to Input Devices Portable Media Players  Basic devices used to store music.  Can be used for downloading music.  They can have built in small hard disks, micro drives, or flash memory depending on the manufacturer. AdvantagesDisadvantages CompactSmall screens Hold up to 100GB of dataEarphones may be of low quality

6. Back to Input Devices Global Positioning Systems They work by making use of satellites that orbit the earth. Receivers are used in navigation + for drawing maps. Exact position of receiver can be determined by carrying out calculations based on the position of satellites and time taken for satellites to get to the receiver. GPS can be used by runners AdvantagesDisadvantages Can be achieved regardless of the surrounding terrain. Transmission may be slow at times Greater accuracy.Expensive devices.

7. Back to Input Devices Satellite Navigation Systems it has 2 functions: 1.GPS calculates position of the driver 2.Stored date consists of data about all the roads in the country. It is often used by drivers to produce a route for their cars. AdvantagesDisadvantages Quicker to use than a road map Small display Receive up to date traffic conditions Unsuitable roads can be recommended.

8. Back to Input Devices Handheld Computers Have small screens and keyboards. used where power cannot be relied upon. Example: PDA. Used by people whose job requires them to be travelling a lot. AdvantagesDisadvantages Can be used away from the place of work Difficult to enter much text. Easier to carry than laptopsAs expensive as laptops Limited operating software Limited application software.

9. Back to Input Devices Bluetooth Uses radio waves to connect devices. Maximum distance is usually 10 meters. Transfer rate is 1 MB/s Can communicate between a headset and mobile. Can be used for game consoles for wireless controllers. AdvantagesDisadvantages Used for a variety of applicationsData transfer rate is slower than that of WiFi Cheaper hardware than WiFiCovers smaller distances than WiFi Consumes less power than WiFi