**Donald Knuth, American mathematician, computer scientist (born 1938):**

(based on his brief biography presented in “Discrete Mathematics and its Applications by Kenneth H. Rosen):

Knuth grew up in Milwaukee, where his father taught book-keeping at a Lutheran high school and owned a small printing business. He was an excellent student, earning academic achievement awards. He applied his intelligence in unconditional ways, winning a contest, when he was in the eighth grade by finding over 4500 words that could be formed from the letters in “Ziegler’s Giant Bar.” This won a television set for his school and a candy bar for everyone in his class.

Knuth had a difficult time choosing physics over music as his major at the Case Institute of Technology. He then switched from physics to mathematics, and in 1960 he received his bachelor of science degree simultaneously receiving a master of science degree by a special award of the faculty who considered his work outstanding. At Case, he managed the basketball team and applied his talents by constructing a formula for the value of each player. This novel approach was covered by *Newsweek *and by Walter Cronkite on the CBS television network. Knuth began graduate work at the California Institute of Technology in 1960 and received his Ph.D. there in 1963. During this time, he worked as a consultant, writing compilers for different computers.

Knuth joined the staff of the California Institute of Technology in 1963, where he remained until 1968, when he took a job as a full time professor of Stanford University. He retired as Professor Emeritus in 1992 to concentrate on writing. He is especially interested in updating and completing new volumes of his series, **The Art of Computer *** Programming*, a work that has had a profound influence on the development of computer science, which he began writing as a graduate student in 1962, focusing on compilers. In common jargon, “Knuth” referring to

*has come to mean the reference that answers all questions about such topics as data structures and algorithms.*

**The Art of Computer Programming**Knuth is the founder of the modern study of computational complexity. He has made fundamental contributions to the subject of compilers. His dissatisfaction with mathematics typography sparked him to invent the widely used TeX and Metafont systems. TeX has become a standard language for computer typography. Two of the many awards Knuth has received are the 1974 Turing Award and the 1979 National Medal of Technology, awarded to him by President Carter.

Knuth has written for a wide range of professional journals in computer science and in mathematics. However, his first publication in 1952, when he was a college freshman, was a parody of the metric system called “The Potrzebie Systems of Weight and Measures,” which appeared in *MAD* magazine and has been in reprint several times. He is a church organist, as his father was. He is also a composer of music for the organ. Knuth believes that writing computer programs can be an aesthetic experience, much like writing poetry or composing music.

Knuth pays USD 2.56 for the first person to find each error in his books and USD 0.32 for significant suggestionss, if you send him a letter with an error (you will need to use regular mail because he has given up reading e-mail), he will eventually inform you whether you were the first person to tell him about this error. Be prepared for a long wait, because he receives an overwhelming amount of mail. (The author Prof Kenneth H. Rosen received a letter years after sending an error report to Knuth, nothing that this report arrived several months after the first report of this error.)

With regards to Prof. Donald Knuth,

Nalin Pithwa