Over the years, various devices designed for people with special needs have been used for a while and then replaced with modern devices to make everyday life easier. The development of mobile devices is especially improved today and through them different everyday activities are facilitated, not only by people with special needs. The purpose of this paper is to present some of the modern mobile devices with an analysis of their operating systems, functionalities, applications and design. Based on the research, their usability for both sighted and visually and hearing-impaired users is described. Attention is paid to the preferences formed among users when using specialized applications developed for mobile devices. Based on a survey of specific target user groups, the paper provides summary results to support the thesis on the importance of the facilities, offered by modern mobile devices.
The implementation of specialized software in the business supports the processes related to production and employees' activities, and those providing quick access to the necessary information between branches. The need for better business management and closer interaction with customers via the internet underpins the modern CRM systems development. Detailed research of existing CRM systems has established the necessity to design and implement a modern system specialized for the needs of agricultural machinery users in Bulgaria. The report presents a CRM system developed to facilitate information exchange, rapid customer service, synchronization of activities in order to increase agricultural machinery sales with better marketing.
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