Under the Intranet environment of electricity utilization, the substation management information system based on browser/server model and graphics mode is developed by using Java technique.

This paper describes the methods of reading and wristing ofvideo RAM directly in the EGA/VGA graphics mode, and itsapplication in the implementation of saving and restoringgraphis screen, chanese windows, display and zoom of multiplechinese character fonts.

The paper introduces the principle and application of liquid display controller SED1330 newly made by SEIKO EPSON,puts special stress on studying realization of Chinese characters display technology under graphic mode,write the concrete and practical program code,and applies it to display graph and Chinese characters in medical system,its effect is very good.

Surveying and mapping the new rural construction planning map is an important task at this stage,as work starts more later than developed countries,some problems remain in practice of surveying and mapping,such as the precision of maps,mapping scale and mapping methods,the main content of mapping.