Symbian OS is one of the most popular operating system for smartphones. The most favorite version of Symbian OS is the S60 platform, which is the aim of this thesis. Part of this thesis is focused on theoretical overview of Symbian OS, and a description of integraded sensors in smartphones. The second part is devoted to the implementation of sample application for inteligent ringtones. This application allows smartphone to customize phone ringing according to information obtained from sensors. Application was implemented in C++ language with Symbian-specific modifications. The development environment used was Carbide.c++ with SDK S60 3rd Edition Feature Pack 1.

The subject of this thesis is to compare the most widely used mobile operating systems from the perspective of the development, distribution and monetization of applications developed for these systems. Compared systems are Android, iOS, Symbian OS, Windows Phone and BlackBerry OS. The thesis defines a total of 16 criteria against which systems are compared. These criteria are further divided into three categories, namely SDK features, functionality and distribution and monetization. All criteria have assigned weights which are determined by the paired comparison method using the Fuller's triangle, which is part of the Annexes of this work. Practical part of this thesis is focused on determining the values of defined criteria. Each criterion is evaluated separately, including an analysis of results. The overall evaluation is performed in a separate part of the thesis and is composed by categories evaluation and overall evaluation.

This thesis deals with the development problems and creating of the multi- purpose hardware platform, which supports operating system Linux. It is focused on the microprocessors using ARM architecture with architecture ARM7, ARM9 and ARM11. The scope of the first part of this thesis was searching the sales of available 32 bit ARM microprocessors. The second part is attended to a particular Mini2440 development kit, its animation and the subsequent development of the kernel drivers for OS Linux platform. One of this thesis details was also the development of my own expansive hardware module and a capacity keypad for a usage with Mini2440 developmental kit.