This paper retrospects the software technology in 20 century from the point of view of database technology, AI, computer graphics, human-machine interface, multimedia data compression technology and software project.

• 从数据库技术、人工智能、计算机图形学、人机界面、多媒体数据压缩技术和软件工程等不同侧面回顾了 2 0世纪软件技术的发展。