Telematics is the blending of computers and wireless
telecommunications technologies, ostensibly with the goal of
efficiently conveying information over vast networks to improve a
host of business functions or government-related public services.
The most notable example of telematics may be the Internet itself,
since it depends on a number of computer networks connected globally
through telecommunication backbones. 
Informatics includes the science of information, the practice of information processing, and the engineering of information systems. Informatics studies the structure, behaviour, and interactions of natural and artificial systems that store, process and communicate information.
It also develops its own conceptual and theoretical foundations. Since computers, individuals and organizations all process information, informatics has computational, cognitive and social aspects, including study of the social impact of information technologies.
Used as a compound, in conjunction with the name of a discipline, as in medical informatics, bioinformatics, etc., it denotes the specialization of informatics to the management and processing of data, information and knowledge in the named discipline, and the incorporation of informatics concepts and theories to enrich the other discipline; it has a similar relationship to library science.
Informatics is broader in scope than: information theory—the study of a particular mathematical concept of information; information science—a field primarily concerned with the collection, classification, manipulation, storage, retrieval and dissemination of information in human society; artificial intelligence—the study and engineering of intelligent behaviour, learning, and adaptation, in machines; or computer science—the study of the storage, processing, and communication of information using engineered computing devices.
