Shannon is best known for developing the mathematical foundations of communication (establishing the field of information theory), data compression, digital computers, cryptography, circuit complexity, flow networks, and juggling, as well as laying foundations for artificial intelligence and humanâ€“computer interaction.

Claude Shannon was an outstanding American mathematician, engineer and cryptographer known over the World as Father of Information Theory. He was born on April 30th 1916 in Petoskey City, Michigan. His father was Claude, Sr. (businessman), and mother was teacher. Education: bachelor from Michigan University in area of electronics and mathematics (1936), master degree from MIT (1937).

**His Main Scientific Achievements Were:**

Symbolic analysis of switch devices (1938)

Algebra in theoretical genetic (1940)

Working at Bell Lab in the cipher design area and on speech encryption

Breaking of ciphers (jointly with A. Turing) (1940 – 1945)

Investigation of signal prediction and smoothing (1945)

PreparingÂ of Memorandum Mathematical Theory of Cryptography (1945), (was declassified in 1949).

Publication of his main work A Mathematical Theory of Communication in BSTI (1948).

**Additional scientific achievements by C. Shannon:**

Design of the device for solving Rubik’s Cube problem

Development of software for playing chess (1950)

Applying of information theory for stock exchange operations.