# A Symbolic Analysis of Relay and Switching Circuits

**his thesisintroduced**

A Symbolic Analysis of Relay and Switching Circuits is the title of a master's thesis written by computer science pioneer Claude E. Shannon while attending the Massachusetts Institute of Technology (MIT) in 1937.wikipedia

31 Related Articles

### Claude Shannon

**Claude E. ShannonShannonClaude Elwood Shannon**

A Symbolic Analysis of Relay and Switching Circuits is the title of a master's thesis written by computer science pioneer Claude E. Shannon while attending the Massachusetts Institute of Technology (MIT) in 1937.

He is also well known for founding digital circuit design theory in 1937, when—as a 21-year-old master's degree student at the Massachusetts Institute of Technology (MIT)—he wrote his thesis demonstrating that electrical applications of Boolean algebra could construct any logical numerical relationship.

### Boolean algebra

**Boolean logicBooleanBoolean algebra (logic)**

In his thesis, Shannon, a dual degree graduate of the University of Michigan, proved that Boolean algebra could be used to simplify the arrangement of the relays that were the building blocks of the electromechanical automatic telephone exchanges of the day.

Claude Shannon formally proved such behavior was logically equivalent to Boolean algebra in his 1937 master's thesis, A Symbolic Analysis of Relay and Switching Circuits.

### Relay

**relayslatching relayelectric relay**

In his thesis, Shannon, a dual degree graduate of the University of Michigan, proved that Boolean algebra could be used to simplify the arrangement of the relays that were the building blocks of the electromechanical automatic telephone exchanges of the day.

The use of relays for the logical control of complex switching systems like telephone exchanges was studied by Claude Shannon, who formalized the application of Boolean algebra to relay circuit design in A Symbolic Analysis of Relay and Switching Circuits.

### Thesis

**dissertationdoctoral thesisdoctoral dissertation**

A Symbolic Analysis of Relay and Switching Circuits is the title of a master's thesis written by computer science pioneer Claude E. Shannon while attending the Massachusetts Institute of Technology (MIT) in 1937.

### Computer science

**computer scientistcomputer sciencescomputer scientists**

A Symbolic Analysis of Relay and Switching Circuits is the title of a master's thesis written by computer science pioneer Claude E. Shannon while attending the Massachusetts Institute of Technology (MIT) in 1937.

### Massachusetts Institute of Technology

**MITM.I.T.Massachusetts Institute of Technology (MIT)**

### University of Michigan

**MichiganUniversity of Michigan, Ann ArborUniversity of Michigan at Ann Arbor**

In his thesis, Shannon, a dual degree graduate of the University of Michigan, proved that Boolean algebra could be used to simplify the arrangement of the relays that were the building blocks of the electromechanical automatic telephone exchanges of the day.

### Telephone exchange

**exchangescentral officeexchange**

### Binary

**Binary (disambiguation)binaries**

The utilization of the binary properties of electrical switches to perform logic functions is the basic concept that underlies all electronic digital computer designs.

### Computer

**computerscomputer systemdigital computer**

The utilization of the binary properties of electrical switches to perform logic functions is the basic concept that underlies all electronic digital computer designs.

### Digital electronics

**digital circuitdigitaldigital technology**

Shannon's thesis became the foundation of practical digital circuit design when it became widely known among the electrical engineering community during and after World War II.

### Electrical engineering

**electrical engineerelectricalElectrical and Electronics Engineering**

Shannon's thesis became the foundation of practical digital circuit design when it became widely known among the electrical engineering community during and after World War II.

### World War II

**Second World WarwarWWII**

Shannon's thesis became the foundation of practical digital circuit design when it became widely known among the electrical engineering community during and after World War II.

### Ad hoc

**ad-hocadhocAd hoc query**

At the time, the methods employed to design logic circuits were ad hoc in nature and lacked the theoretical discipline that Shannon's paper supplied to later projects.

### Howard Gardner

**GardnerDr. Howard GardnerGardner, Howard**

Psychologist Howard Gardner described Shannon's thesis as "possibly the most important, and also the most famous, master's thesis of the century".

### American Institute of Electrical Engineers

**AIEETransactions of the American Institute of Electrical EngineersAIEEE**

A version of the paper was published in the 1938 issue of the Transactions of the American Institute of Electrical Engineers, and in 1940, it earned Shannon the Alfred Noble American Institute of American Engineers Award.

### Alfred Noble Prize

**Noble PrizeAlfred Noble American Institute of American Engineers AwardNobel laureate**

A version of the paper was published in the 1938 issue of the Transactions of the American Institute of Electrical Engineers, and in 1940, it earned Shannon the Alfred Noble American Institute of American Engineers Award.

### Computing

**computer technologycomputing technologyapplied computing**

Claude Shannon's 1938 paper "A Symbolic Analysis of Relay and Switching Circuits" then introduced the idea of using electronics for Boolean algebraic operations.

### List of University of Michigan alumni

**List of University of Michigan people14 of them university alumni**

### A Mind at Play

He is well known for founding digital circuit design theory in 1937, when—as a 21-year-old master's degree student at MIT—he wrote his thesis demonstrating that electrical applications of Boolean algebra could construct any logical numerical relationship.

### Vannevar Bush

**Bush, VannevarBushV. Bush**

Working on the analytical engine, Shannon described the application of Boolean algebra to electronic circuits in his landmark master's thesis, A Symbolic Analysis of Relay and Switching Circuits.

### Switching circuit theory

**switching circuitswitching theoryswitching**

His work was later cited and elaborated on in Claude Shannon's seminal 1938 paper "A Symbolic Analysis of Relay and Switching Circuits".

### History of science and technology in Japan

Nakashima's work was later cited and elaborated on in Claude Shannon's seminal 1938 paper "A Symbolic Analysis of Relay and Switching Circuits".