There is a whole range of mobile IT devices including the following:
- Smartphones: these are cellular telephones with built-in applications and Internet access. They provide digital voice service as well as text messaging, e-mail, Web browsing, still and video cameras, MP3 player, video viewing and often video calling. Smartphones can run a variety of applications, effectively turning them into mobile computers.
- Tablets: a tablet (or tablet computer) is a mobile computer which is larger than a mobile phone or PDA and is integrated into a flat touch screen. Tablets are normally operated by touching the screen rather than by using a physical keyboard, although they may use an onscreen virtual keyboard or a stylus.
- PDAs: a personal digital assistant (PDA), or palmtop computer, is a mobile device that functions as a personal information manager. Many PDAs can also connect to the Internet and have a touchscreen display which supports web browsing.Some also have audio facilities, allowing them to be used as portable media players. PDAs have generally been superseded by smartphones which also provide mobile phone facilities.
- Portable media players: a portable media player (PMP) or digital audio player, (DAP) is an electronic device capable of storing and playing digital media such as audio, images, video, documents, etc. Data is generally stored on a hard drive, SD card or flash memory. Media players are often referred to as as MP3 players, even if they support other types of media.
- Electronic organisers: an electric organiser is a calculator-sized computer with a built-in diary application and other other functions such as an address book and calendar. It normally has a small alphanumeric keypad and an LCD screen capable of displaying a few lines of text. Electronic organisers have largely been superseded by smartphones which can provide the same functions along with many others.
We will look at the commonest devices, Smartphones and Tablets, in the following sections.