Hisao Yamada Explained

Hisao Yamada
Birth Date:	June 8, 1930
Field:	Computer science
Alma Mater:	University of Pennsylvania
Doctoral Advisor:	Robert McNaughton
Notable Students:	Rao Kosaraju

was a Japanese computer scientist, known for his influential contributions to theoretical computer science, as well as for the development of Japanese keyboard layouts, a challenging practical problem. From 1972 to 1991, he was professor of the formal languages division at the Department for Information Science at the University of Tokyo.

Work

In the field of theoretical computer science, Yamada introduced the notion of real-time computability. As his colleague Aravind Joshi recalls:

Selected publications

• McNaughton . R. . Yamada . H. . Regular Expressions and State Graphs for Automata . IEEE Transactions on Electronic Computers . EC-9 . 39–47 . 1960 . 10.1109/TEC.1960.5221603.
• Yamada . H. . Real-Time Computation and Recursive Functions Not Real-Time Computable . IEEE Transactions on Electronic Computers . EC-11 . 6 . 753–760 . 1962 . 10.1109/TEC.1962.5219459.
• Hisao Yamada: "A Historical Study of Typewriters and Typing Methods: from the Position of Planning Japanese Parallels", Journal of Information Processing, 2(4) (February 1980), pp. 175–202

References

• Deaths: Dr. Hisao Yamada, SEAS. University of Pennsylvania Almanac 55(2), p. 3
• History, University of Tokyo, Department of Information Science