PURPOSE: a kind of scholastic computerized system and its method make server downloading electronic textbook and provide point-to-multipoint interactive electronic educational system, give user. ;CONSTITUTION: a kind of electronic textbook be include top main frame (11). A kind of electronic textbook server is built into the control server on network. Data are downloaded to upper server (12). Upper server downloads electronic textbook to each intermediate server (13). Intermediate server downloads electronic textbook to lower server. ;The 2011 of copyright KIPO submissions
展开▼