Design & implementation of user interface for mobile devices

The inspiration behind the wireless world came from the need to provide users with mobility and to offer an alternative to the limitations of wired medium. As a result, the user interface and the size of mobile devices in various wireless mobile technologies like GSM, GPRS, WLAN, and Bluetooth are the main concerns in the design of mobile devices. In this paper, we design a single-layered touch screen based user interface. Unlike conventional multi-layered user interface, a single-layered user interface makes the user interface more friendly and reduces the interface size. The memory requirements can be further reduced by implementing it in low-level languages. After design and implementation of user interface, we interface the user interface with the hardware of mobile devices through serial port with the help of AT commands.