How many pages of design manuscripts did Wang Xuan design during 18?

From 1975 to 1993, Wang Xuan devoted all his energy to the development of laser phototypesetting system, giving up almost all holidays and working in three time periods every day. In the process of system design, his manuscript reached more than 2200 pages. When he has no time during the day, he works at night, and some designs are done on the plane or even on the bus when he is on a business trip.

1975, Wang Xuan and his wife Oscar Chan, who teaches in the Department of Mathematics in Peking University? ? When discussing the national key science and technology project "Chinese character information processing technology project", the sub-project "Chinese character precision phototypesetting" aroused Wang Xuan's keen scientific research judgment. He believes that if "accurate typesetting of Chinese characters" can be realized.

In the aspect of Chinese character information storage, analog storage is adopted, and the selected output scheme is the internationally accepted second-generation or third-generation computer. After careful investigation and study, Wang Xuan made an unusual direction judgment and a bold leap-forward technical decision: analog storage has no future, and Chinese character information should be stored in the computer in the form of digital storage.

Wang Xuan took out his dictionary and pondered the strokes of each Chinese character. He soon discovered the law: although there are many Chinese characters, each Chinese character can be subdivided into regular strokes such as horizontal, vertical and folding, as well as irregular strokes such as skimming, pressing, clicking and ticking. The compressed Chinese font information can be restored at a high speed of 7 10 words per second, which is the most powerful Chinese font changing function in the world.