Management Information Systems (MIS) are used to collect, process, store, and disseminate information to support decision making and problem solving. MIS involves acquiring, using, and discarding information efficiently through activities like input, processing, output, and feedback. It requires skills like computer literacy, information literacy, and the ability to share information. Key computer-based MIS subsystems include accounting, management, decision support, office automation, and expert systems. Specialists involved with MIS include systems analysts, database administrators, network specialists, programmers, and operators.