Composition of hospital information system? urgent

Hospital information system is a big hospital relationship network ... Basically, the basic information system of a hospital is: the president's decision analysis system, the outpatient registration and outpatient price charge management system, the hospitalization charge management system, the pharmacy management and the warehouse management system, which depends on how the hospital divides itself. Generally, there are outpatient hospitalization and Chinese and western medicine. Financial management system, system maintenance and data backup system are necessary! General software companies are free! In addition, PACS and LIS include many: such as electronic medical records, electronic prescriptions and so on!