Mobile computing is "taking a computer and all necessary files and software out into the field.Mobile computing is a form of human–computer interaction by which a computer is expected to be transported during normal usage. Mobile computing has three aspects: mobile communication, mobile hardware, and mobile software. The first aspect addresses communication issues in ad-hoc and infrastructure networks as well as communication properties, protocols, data formats and concrete technologies. The second aspect is on the hardware, e.g., mobile devices or device components. The third aspect deals with the characteristics and requirements of mobile applications.

The Mobile computers can be broadly classified into three groups: Key-based, Pen-based and Vehicle Mount.Mobile computing combined with the power of bar coding, helps your field staff in gathering information in the field itself enabling them to make decisions in real time.

The mobile computers are basically computers having their own display screen, RAM, Flash/ROM, battery and optional bar code scanners. Mobile computers are fully working computer having their own processors and are fully programmable to business requirements. They also have following characteristics: