There are four main types of portable devices, these include: Laptops, Notebooks, Netbooks, and PDAs (Personal Digital Assistant). They each have individual aspects that make them different...


Laptops are portable, light, computers that are supposed to have the same functions as a computer. But, the majority of the time they dont have the same memory which a lot of people are put off by, and they also wont comply with certain programs that some people may use because the Laptops wont have the same compatibillity as a Desktop. However, an advantage of a laptop is that they are very easy to carry around with you so are suitable for people that are always on the move or those who dont have the space to store a desktop.
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A Netbook is a smaller, more compact version of a Laptop, which for some people, is very practical. This would be practical for people who has a job involving constantly being on the move: A News Reporter or a Journalist. However, they don't have a disk drive which means that a lot of people will be put off by this because disks are widely used. Also, they tend not to have as much memory as a Laptop which means that they might not be as compatilble.
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A Notebook is very similar to a Netbook but has a specific use of wireless communication. This would be usefull for a Journalist because they are always on the move and need to communicate with their company/boss/manager. They are generally cheaper as they have the one specific use, although it does have the capability of browsing the internet.
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A PDA (Personal Digital Assistant) is a small device that can be held in the palm of your hand. their general uses are: note making, address books, telephone features, and internet capability.
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Peripheral devices are hardware items that are connected internally or externally to the internet an dare used in data transfer.


An input device is a device that is used to input data or information into a computer. For example, a keyboard is an input device, whereas a display moniter is an output device. Keyboards, Computer Mouse, Touchpads, Trackballs, Image scanners, Webcams, Barcode scanners, and Microphones. 


Any computer related device that gives out/displays output data. Monitor, Printer, Sound card, Speakers, and Video card.



Optical storage devices save data as patterns of dots that can be read using dots. A laser beam is the usual light source. The data on the storage medium is read by bouncing the laser beam off the surface of the medium. If the beam hits a dot it is reflected back differently to how it would be if there was no dot. This difference can be detected, so the data can be read. Typically, the data is written to optical media, such as CDs and DVDs. Optical media is more durable than tape and less vulnerable to environmental conditions. On the other hand, it tends to be slower than typical hard drive speeds, and to offer lower storage capacities.
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A storage medium in which different patterns of magnetizations are used to represent stored bits or bytes of information.