Solution

1a Management Information System (MIS) is a subset of the overall internal controls of a business covering the application of people, documents, technologies, and procedures by management accountants to solving business problems such as costing a product, service or a business-wide strategy. Management Information Systems are distinct from regular information systems in that they are used to analyze other information systems applied in operational activities in the organization.[1] Academically, the term is commonly used to refer to the group of information management methods tied to the automation or support of human decision making, e.g. Decision Support Systems, Expert systems, and Executive information systems.
This is an emerging science which sets its the main task of it is to strengthen the information management of enterprises by taking advantage of modern computer and network communication technology to the largest extent, and set up the correct data based on the research of human resource, financial resource, equipments, technology, etc. owned by enterprises, and provide timely various of processed and systemized information data to the manager so as to make correct decisions and improve continuously the management level and economic benefits of enterprises.
MIS is generally used for system decision-making. For instance, enterprise employee can make use of MIS to find out problems that need to be solved urgently and feedback in time to the upper managers in order to make them understand the current progress and its shortages.
1b. Some of the functions can be listed as below,
1. data processing
It includes the collection, transmission, storage, processing and output of data. It simplifies the statistics and reduces to the lowest cost by supplying an unified format.
2. function of prediction
It predicts the future situation by applying modern mathematics, statistics or simulation.
3. function of plan
It arranges reasonably the plans of each functional department in accordance with the restrictions afforded by enterprises and provides the appropriate planning reports according to different management.
4. function of control
It monitors and inspects the operation of plans and comprises with the differences between operation and plan in accordance with the data afforded by every functional department, and be assistant to managers to control timely each method by analyzing the reasons why the differences comes into being.
5. function of assistance
It derives instantly the best answers of related problems by applying to various of mathematics' mode and analyzing a plentiful data stored in computers in the hope of using rationally human resource, financial resource, material resource and information resource for relative abundant economic benefits.